Forever Knight - Season 1 Episode 6 Dying to Know You

The wife and daughter of a well-known philanthropist are kidnapped and held for ransom, and psychic Denise Fort is brought in help Nick and Schanke with the case. Her powers are genuine, and therein lies the problem: she keeps picking up flashes of Nick's "other life", and Nick feels torn about whether or not to reveal himself to her, since she thinks it's a sign that she's having a breakdown. Nick's recollections of a similar situation in Puritan New England make him determined that Denise won't share th e fate of his mortal friend from that time.