Castle‘s 12th precinct is fortifying its ranks as Season 6 opens, with the addition of an ambitious new crimesolver. TVLine has learned that Joshua Bitton has been recruited to guest star in multiple episodes as Grant “Sully” Sullivan, a new detective who is trying to prove himself at the 12th Precinct.
Kids of the 12th Precinct Nathan Fillion (PI Richard Castle), Stana Katic (Cap. Kate Beckett), Seamus Denver (Det. Kevin Ryan), Tamala Jones (ME Lainie Parish) & Jon Huertas (Det. Javier Esposito) #Castle