From next week Castle will air twice a week on Seven, at 9:30pm Sundays and Tuesdays.
Just to really confuse you, there is also a repeat episode scheduled for 10:30pm Sundays.
9:30pm Tue Feb 21:
“Kick the Ballistics.”
While investigating the mysterious shooting death of a young woman, Castle and Beckett face a cop’s worst nightmare when they discover that the gun used in the killing is Det. Ryan’s old service weapon – the one that was stolen by the serial killer, 3XK. Now with the clock ticking, the team must work to solve the murder, track down 3XK and retrieve Ryan’s gun before the killer strikes again.