A.P. Bio creator Mike O'Brien is known for playing Jerry ... The sitcom stars It's Always Sunny in Philidelphia's Glenn Howerton as Jack Griffin, a former philosophy professor who starts working ...
And so far, fans are pleased. A.P. Bio stars Glenn Howerton as Jack Griffin, a disgraced former Harvard professor who finds his job usurped by his literary and professional nemesis, Miles Leonard.
It’s always busy for the It’s Always Sunny in Philadelphia cast.