Michael Trucco, best known for his role on Battlestar Galactica, in joining Castle in a recurring role.
The actor will play a love interest for Stana Katic's Kate Beckett. The character will be a charismatic cop in the homicide division and will appear in this season’s final four episodes. He might even return in the fall, according to Michael Ausiello.
Trucco has also guest-starred on episodes of One Tree Hill, Eli Stone and The Big Bang Theory.