Dennis Reynolds walks into a school, and the mighty hammer of Thor crashes down on everyone. This is the premise of Glenn Howertons school house comedy A.P. Bio. A fish-out-of-water tale about a disgruntled author forced to take up a teaching position at his hometown school, A.P. Bio is the spiritual offshoot of Howertons role in Its Always Sunny in Philadelphia. And while fans may have missed the hilarious workplace comedy starring one of the owners of the Worst Bar in Philadelphia during its initial run, Netflix has offered them a second chance with the series arrival to streaming. And so far, fans are pleased.