Headhunters

His relationship with Beckett strained, Castle teams up with Detective Ethan Slaughter from the city's gang unit. But Slaughter's kind of police work could put Castle in real danger.

TV-14-DLV
Season 4 | Episode 21
Cast

Molly Quinn

as Alexis Castle

Nathan Fillion

as Richard Castle

Jon Huertas

as Javier Esposito

Seamus Dever

as Det. Kevin Ryan

Stana Katic

as Kate Beckett

Susan Sullivan

as Martha Rodgers

Tamala Jones

as Lanie Parish