A former philosophy professor who takes a job teaching advanced placement biology uses his students to get back at the people in his life who have wronged him.
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Season 4 Premiere

Most Recent Episode

Thursday, September 3, 2020

While the rest of the town prepares for the celebration of Toledo's annual Katie Holmes Day, Jack and Marissa plot to ruin the holiday pageant.

Previous Episode

Thursday, September 3, 2020



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Series cast summary:
Glenn Howerton ...  Jack Griffin 36 episodes, 2018-2021
Lyric Lewis ...  Stef Duncan 36 episodes, 2018-2021
Patton Oswalt ...  Principal Ralph Durbin 36 episodes, 2018-2021
Aparna Brielle ...  Sarika / ... 36 episodes, 2018-2021
Nick Peine ...  Marcus / ... 36 episodes, 2018-2021
Eddie Leavy ...  Anthony / ... 36 episodes, 2018-2021
Jacob Houston ...  Victor / ... 36 episodes, 2018-2021
Mary Sohn ...  Mary Wagner 35 episodes, 2018-2021
Jean Villepique ...  Michelle Jones 35 episodes, 2018-2021
Sari Arambulo ...  Grace 35 episodes, 2018-2021
Allisyn Snyder ...  Heather 34 episodes, 2018-2020
Spence Moore II ...  Dan Decker / ... 34 episodes, 2018-2021
Paula Pell ...  Helen Henry Demarcus 30 episodes, 2018-2021
Marisa Baram ...  Marissa 28 episodes, 2018-2021
Miguel Chavez ...  Eduardo 24 episodes, 2018-2021
Jacob Timothy Manown ...  Caleb 23 episodes, 2019-2021
Charlie McCrackin ...  Dick Novak / ... 20 episodes, 2018-2021
Elizabeth Alderfer ...  Lynette 17 episodes, 2019-2021
David Neher ...  Dave 15 episodes, 2018-2020

What Have We Done to Glenn Howerton?

Celebrities sit through tons of interviews, so we wanted make sure our talk with "A.P. Bio" and "It's Always Sunny in Philadelphia" star Glenn Howerton was memorable.

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A former philosophy professor who takes a job teaching advanced placement biology uses his students to get back at the people in his life who have wronged him.

Plot Summary | Add Synopsis


If he's taught them one thing, he's taught them too much.




TV-14 | See all certifications »

Parents Guide:

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Did You Know?


Allisyn Snyder came up with many of the quirks and mannerisms for the character Heather, such as leaning to the side to peak out, and erratically looking around the room, during long takes early on where she didn't have any lines. She was, purportedly, doing this to stay awake and entertain herself, but wasn't aware that show runners noticed this, asked her to do it for additional takes and even baked it into her character. See more »


Referenced in AniMat's Crazy Cartoon Cast: Saving Mr. Rogers (2019) See more »


Listen to My Heart
Written by Dee Dee Ramone, Tommy Ramone, Joey Ramone, and Johnny Ramone
Performed by Ramones
See more »

User Reviews

First original tv show/comedy I've seen in a long time.
2 March 2018 | by rduane-75064See all my reviews

The comedy is intellegent in its own absurdist style. However, I've noticed a theme within the "1 Star" rating reviews; most, if not all, are saying that the show is "offence in this political climate", and should "cater more to today's political atmosphere by discussing some important topics". NOT ALL COMEDY HAS TO HAVE A POLITICAL AGENDA. Let's leave the politics on the news where it belongs. If you want a apolitical absurdist comedy: This show is for you. It's hard for me to see this show being a '1 star' rating by anyone. It's probably not fittingly a 10 (yet) that I gave it, but it's certainly higher than a 6, let along 1.

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Release Date:

1 February 2018 (USA) See more »

Also Known As:

Untitled Mike O'Brien Project See more »

Company Credits

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Technical Specs


Sound Mix:




Aspect Ratio:

16:9 HD
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