The Blue Butterfly

In order to solve the current murder of a treasure hunter, Castle and Beckett must first solve a 1947 homicide that involved a hard-boiled private detective.

Season 4 | Episode 14

TV-14-DLV
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