When a mild mannered safety inspector for the city miraculously survives a poisoning, it might be luck; but when he survives another, it's a mystery Castle and Beckett will have to solve.

Cast: Nathan Fillion, Stana Katic, Susan Sullivan, Jon Huertas, Seamus Dever, Tamala Jones, Molly C. Quinn, Toks Olagundoye, Sunkrish Bala, Maurice Benard, Jordan Borges, Kate Cobb, Marin Hinkle, Sean Holland, Patrick Labyorteaux