Forever Knight.S1E18.Feeding the Beast

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.
S1E18 - Feeding the Beast
Nick joins a support group for addicts, secretly hoping to manage his addiction to blood, and gains a sponsor, a codependent woman addicted to love. When members of the group turn up murdered, Nick wonders if his sponsor is to blame.

Aka. Die Bestie braucht Nahrung (The Beast Needs Food)

Guest Starring:
Carrie-Anne Moss [Monica Howard]

Cast:
Marina Anderson
Hadley Obodiac
Diego Chambers
Peter Messaline
Ian Deakin
Julie Armstrong
Louis Wrightman
Christine Reeves
Helene Rousse

Written by Alison Bingeman
Directed by Richard J. Lewis