Ken Baumann gets sandwiched in between on-screen girlfriend Molly Quinn and on-screen girlfriend’s father Nathan Fillion in this new still from tonight’s episode of Castle.

In tonight’s episode “Punked,” Castle (Fillion) and Beckett (Stana Katic) look into the murder of a young mathematician gunned down with a 200-year-old bullet, sparking some wild theories by Castle about a time-travelling killer.

Molly shared with TVGuide about new beau Ashley (Baumann), “He’s showing her a new side of life that she hasn’t really been able to get into because she’s always had to take care of her dad.”

“Punked” premieres TONIGHT, October 11 @ 10PM ET/PT on ABC. Also check inside for what’s next on Castle…

10/18 @ 10PM ET/PT on ABC – “Anatomy of a Murder” — Mysteries abound when pallbearers at a funeral lose control of a surprisingly heavy casket only to have a second unknown woman tumble out along with the original deceased. When Castle and Beckett learn that the victim was a doctor at County Hospital, their investigation takes them into the world of amorous, bed-hopping physicians. Did jealousy turn to murder, or did the doctor’s mysterious work outside the hospital lead to her demise? Meanwhile, Castle’s relationship with Gina is challenged when she tries to bond with Alexis.