Forever Knight.S2E14.Baby Baby

Forever Knight is a 1992 - 1996 Canadian television series about Nick Knight (Geraint Wyn Davies), an 800-year-old vampire working as a police detective in modern-day Toronto, Ontario. Wracked with guilt for centuries of killing others, he seeks redemption by working as a homicide detective on the night shift while struggling to find a way to become human again.
S2E14 - Baby Baby
At a murder scene, Nick meets a vampire he brought across in 1920s Paris who is convinced that the prime suspect's rare XYY chromosomes may hold the key to regaining her mortality.

Aka. Vollmond (Full Moon)

Guest Starring:
Denise Virieux (Serena)

Cast:
Page Fletcher (Trilling)
Richard Blackburn (Sgt. Mandrake)
Nicu Branzea (Emile)
Pierre Peloquin (Armand)
Maxim Roy (Louise)

Written by Morrie Ruvinsky
Directed by Geraint Wyn Davies