Knock Knock, Who's There?

Name: Knock Knock, Who's There?
Genre: Comedy, Animation, Action & Adventure, Fantasy, Science Fiction
Released: April 23, 2021

SpongeBob SquarePants: Season 12: Episode 37

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Spongebob Squarepants

Episode Details & Credits

Nickelodeon | Air Date: April 23, 2021

Summary: SpongeBob watches Mr. Krabs's house while he's away, so he takes extreme measures to make sure no one breaks in.

Creator: Stephen Hillenburg and Derek Drymon and Nick Jennings and Nick Jennings and Tim Hill

Genre(s): Comedy, Animation, Action & Adventure, Fantasy, Science Fiction, Kids

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Season 12 Episodes

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S12:E38. Pat Hearts Squid
Air Date: July 9, 2021
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S12:E37. Knock Knock, Who's There?
Air Date: April 23, 2021
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S12:E36. Who R Zoo?
Air Date: February 8, 2020

See all Seasons and Episodes

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Seasons & Episodes

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Series Overview
Season 14

tbd
- Season 14 Overview
  Air Date: November 2, 2023
Season 13

tbd
- Season 13 Overview
  Air Date: November 26, 2022
Season 12

tbd
- Season 12 Overview
  Air Date: November 11, 2018
- tbd
  S12:E38. Pat Hearts Squid
  Air Date: July 9, 2021
- tbd
  S12:E37. Knock Knock, Who's There?
  Air Date: April 23, 2021
- tbd
  S12:E36. Who R Zoo?
  Air Date: February 8, 2020
- tbd
  S12:E35. Your Shoe is Untied
  Air Date: January 2, 2020
- tbd
  S12:E35. Jellyfish Hunters; The Fry Cook Games
  Air Date: June 1, 2020
- tbd
  S12:E35. The Hankering
  Air Date: November 30, 2019
- tbd
  S12:E34. The Stars of SpongeBob Fan Favorites Special
  Air Date: June 5, 2020
- tbd
  S12:E34. A Cabin in the Kelp
  Air Date: October 12, 2019
- tbd
  S12:E33. Who R Zoo?
  Air Date: February 8, 2020
- tbd
  S12:E33. One Trick Sponge
  Air Date: April 11, 2020
- tbd
  S12:E33. Jellyfish Hunters; The Fry Cook Games
  Air Date: June 1, 2020
- tbd
  S12:E33. Lighthouse Louie/Hiccup Plague
  Air Date: January 18, 2021
- tbd
  S12:E32. Swamp Mates
  Air Date: April 11, 2020
- tbd
  S12:E32. The Hankering
  Air Date: November 30, 2019
- tbd
  S12:E32. One Trick Sponge
  Air Date: April 11, 2020
- tbd
  S12:E32. Knock Knock, Who's There?
  Air Date: July 17, 2021
- tbd
  S12:E31. A Cabin in the Kelp
  Air Date: October 12, 2019
- tbd
  S12:E31. Who R Zoo?
  Air Date: February 8, 2020
- tbd
  S12:E31. Swamp Mates
  Air Date: April 11, 2020
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  S12:E31. Jolly Lodgers
  Air Date: March 7, 2020
- tbd
  S12:E31. The Ghost of Plankton
  Air Date: October 12, 2019
- tbd
  S12:E30. The Ghost of Plankton
  Air Date: October 12, 2019
- tbd
  S12:E30. Ripped Pants
  Air Date: December 31, 2019
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  S12:E30. Biddy Sitting
  Air Date: February 8, 2020
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  S12:E30. The Hankering
  Air Date: November 30, 2019
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  S12:E30. Jolly Lodgers
  Air Date: March 7, 2020
- tbd
  S12:E30. The Goofy Newbie
  Air Date: September 28, 2019
- tbd
  S12:E29. The Goofy Newbie
  Air Date: September 28, 2019
- tbd
  S12:E29. A Cabin in the Kelp
  Air Date: October 12, 2019
- tbd
  S12:E29. Who R Zoo?
  Air Date: February 8, 2020
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  S12:E29. Biddy Sitting
  Air Date: February 8, 2020
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  S12:E29. Shell Games
  Air Date: March 7, 2020
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  S12:E29. Boss for a Day
  Air Date: July 17, 2020
- tbd
  S12:E28. Your Shoe is Untied
  Air Date: January 2, 2020
- tbd
  S12:E28. Who R Zoo?
  Air Date: February 8, 2020
- tbd
  S12:E28. Biddy Sitting
  Air Date: February 8, 2020
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  S12:E28. Breakin'
  Air Date: September 14, 2019
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  S12:E27. Handemonium
  Air Date: November 23, 2019
- tbd
  S12:E27. Escape from Beneath Glove World
  Air Date: January 18, 2020
- tbd
  S12:E27. Who R Zoo?
  Air Date: February 8, 2020
- tbd
  S12:E27. Who R Zoo?; Biddy Sitting
  Air Date: February 8, 2020
- tbd
  S12:E26. Spongebob's Bad Habit
  Air Date: September 21, 2019
- tbd
  S12:E26. Ripped Pants
  Air Date: December 31, 2019
- tbd
  S12:E26. Escape from Beneath Glove World
  Air Date: January 18, 2020
- tbd
  S12:E26. Who R Zoo?; Biddy Sitting
  Air Date: February 8, 2020
- tbd
  S12:E26. Breakin'
  Air Date: September 14, 2019
- tbd
  S12:E26. Spongebob's Bad Habit
  Air Date: September 12, 2019
- tbd
  S12:E25. Spongebob in Randomland
  Air Date: September 21, 2019
- tbd
  S12:E25. Handemonium
  Air Date: November 23, 2019
- tbd
  S12:E25. Plankton's Old Chum
  Air Date: November 30, 2019
- tbd
  S12:E25. Escape from Beneath Glove World
  Air Date: January 18, 2020
- tbd
  S12:E25. Swamp Mates
  Air Date: February 25, 2020
- tbd
  S12:E25. The Hankering
  Air Date: November 30, 2019
- tbd
  S12:E24. Spongebob's Bad Habit
  Air Date: September 21, 2019
- tbd
  S12:E24. Dirty Bubble Returns
  Air Date: November 23, 2019
- tbd
  S12:E24. Plankton's Old Chum
  Air Date: November 30, 2019
- tbd
  S12:E24. Biddy Sitting
  Air Date: February 8, 2020
- tbd
  S12:E24. The Hankering
  Air Date: November 30, 2019
- tbd
  S12:E23. Spongebob in Randomland
  Air Date: September 21, 2019
- tbd
  S12:E23. Handemonium
  Air Date: November 23, 2019
- tbd
  S12:E23. The Ghost of Plankton; My Two Krabses
  Air Date: October 12, 2019
- tbd
  S12:E23. SpongeBob 129;Karate Choppers
  Air Date: November 10, 2019
- tbd
  S12:E23. Dirty Bubble Returns
  Air Date: November 23, 2019
- tbd
  S12:E23. Plankton's Old Chum
  Air Date: November 30, 2019
- tbd
  S12:E23. Jolly Lodgers
  Air Date: March 7, 2020
- tbd
  S12:E22. Handemonium
  Air Date: November 23, 2019
- tbd
  S12:E22. The Ghost of Plankton
  Air Date: October 12, 2019
- tbd
  S12:E22. The Ghost of Plankton; My Two Krabses
  Air Date: October 12, 2019
- tbd
  S12:E22. A Cabin in the Kelp
  Air Date: October 12, 2019
- tbd
  S12:E22. Dirty Bubble Returns
  Air Date: November 23, 2019
- tbd
  S12:E22. Plankton's Old Chum
  Air Date: November 30, 2019
- tbd
  S12:E22. Biddy Sitting
  Air Date: February 8, 2020
- tbd
  S12:E21. Mind the Gap
  Air Date: September 14, 2019
- tbd
  S12:E21. The Ghost of Plankton
  Air Date: October 12, 2019
- tbd
  S12:E21. The Ghost of Plankton; My Two Krabses
  Air Date: October 12, 2019
- tbd
  S12:E21. A Cabin in the Kelp
  Air Date: October 12, 2019
- tbd
  S12:E21. Dirty Bubble Returns
  Air Date: November 23, 2019
- tbd
  S12:E21. Squid's on a Bus
  Air Date: September 28, 2019
- tbd
  S12:E21. Jolly Lodgers
  Air Date: March 7, 2020
- tbd
  S12:E20. Senior Discount
  Air Date: July 6, 2019
- tbd
  S12:E20. Spongebob in Randomland; Spongebob's Bad Habit
  Air Date: September 21, 2019
- tbd
  S12:E20. The Ghost of Plankton
  Air Date: October 12, 2019
- tbd
  S12:E20. A Cabin in the Kelp
  Air Date: October 12, 2019
- tbd
  S12:E20. Dirty Bubble Returns
  Air Date: November 23, 2019
- tbd
  S12:E20. Handemonium/Breakin'
  Air Date: November 23, 2019
- tbd
  S12:E20. Squid's on a Bus
  Air Date: September 28, 2019
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  S12:E20. Shell Games
  Air Date: March 7, 2020
- tbd
  S12:E20. A Place for Pets/Lockdown for Love
  Air Date: July 6, 2019
- tbd
  S12:E19. Mind the Gap
  Air Date: September 14, 2019
- tbd
  S12:E19. The Ghost of Plankton
  Air Date: October 12, 2019
- tbd
  S12:E19. Handemonium/Breakin'
  Air Date: November 23, 2019
- tbd
  S12:E19. Shell Games
  Air Date: March 7, 2020
- tbd
  S12:E18. The Krusty Bucket
  Air Date: August 10, 2019
- tbd
  S12:E17. Musclebob Buffpants; Squidward the Ghost
  Air Date: August 1, 2019
- tbd
  S12:E16. SpongeBob's Boating School
  Air Date: July 20, 2019
- tbd
  S12:E15. Gary & Spot
  Air Date: July 12, 2019
- tbd
  S12:E14. Spongebob's Big Birthday Blowout
  Air Date: July 12, 2019
- tbd
  S12:E13. The Krusty Bucket
  Air Date: August 10, 2019
- tbd
  S12:E13. Karen's Baby
  Air Date: August 10, 2019
- tbd
  S12:E13. Mind the Gap
  Air Date: September 14, 2019
- tbd
  S12:E12. Broken Alarm
  Air Date: July 6, 2019
- tbd
  S12:E11. Insecurity Guards
  Air Date: June 29, 2019
- tbd
  S12:E10. Sandy's Nutty Nieces
  Air Date: June 29, 2019
- tbd
  S12:E9. Gary's Got Legs
  Air Date: June 26, 2019
- tbd
  S12:E8. Stormy Weather
  Air Date: July 12, 2019
- tbd
  S12:E7. FarmerBob/Gary & Spot
  Air Date: July 12, 2019
- tbd
  S12:E6. Senior Discount
  Air Date: July 6, 2019
- tbd
  S12:E5. The Krusty Slammer
  Air Date: January 27, 2019
- tbd
  S12:E5. Stormy Weather
  Air Date: June 22, 2019
- tbd
  S12:E5. King Plankton
  Air Date: June 22, 2019
- tbd
  S12:E5. Sandy's Nutty Nieces
  Air Date: June 29, 2019
- tbd
  S12:E5. Scavenger Pants
  Air Date: June 16, 2019
- tbd
  S12:E4. Pineapple RV
  Air Date: February 9, 2019
- tbd
  S12:E3. The Nitwitting
  Air Date: January 13, 2019
- tbd
  S12:E3. The Ballad of Filthy Muck
  Air Date: January 20, 2019
- tbd
  S12:E3. The Krusty Slammer
  Air Date: January 27, 2019
- tbd
  S12:E3. King Plankton
  Air Date: June 22, 2019
- tbd
  S12:E3. The Nitwitting
  Air Date: January 13, 2019
- tbd
  S12:E2. Gary's Got Legs/King Plankton
  Air Date: June 28, 2019
- tbd
  S12:E1. King Plankton
  Air Date: June 22, 2019
Season 11

tbd
- Season 11 Overview
  Air Date: September 23, 2017
Season 10

tbd
- Season 10 Overview
  Air Date: October 15, 2016
Season 9

tbd
- Season 9 Overview
  Air Date: July 21, 2012
Season 8

tbd
- Season 8 Overview
  Air Date: July 18, 2011
Season 7

tbd
- Season 7 Overview
  Air Date: July 19, 2009
Season 6

tbd
- Season 6 Overview
  Air Date: June 6, 2008
Season 5

tbd
- Season 5 Overview
  Air Date: April 13, 2007
Season 4

tbd
- Season 4 Overview
  Air Date: May 6, 2005
Season 3

tbd
- Season 3 Overview
  Air Date: March 22, 2002
Season 2

tbd
- Season 2 Overview
  Air Date: November 2, 2000
Season 1

tbd
- Season 1 Overview
  Air Date: May 1, 1999