Forever Knight.S2E21.Queen of Harps

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.
S2E21 - Queen of Harps
When Nick finds a harp at a local auction, he is pleased to discover a link to his mortal life as a papal courier in 13th century Wales. However, when the auctioneer is murdered, Nick is torn between his duty as an officer and his longing for the past.

Aka. Die Harfe (The Harp)

Guest Starring:
Brenda Bazinet (Gwyneth/Johanna Shea)

Cast:
Peter Donaldson (Sir Raymond/Hugh DeLabarre)
Ron Hartmann (Ted Haley)
David Bolt (Sam Baskers)
Colin Miller (Concierge)

Written by Gillian Horvath
Directed by Alan Simmonds