Dark Shadows - Season 8 Episode 26 DS-911 Necking in the afternoon.
Overview: Grant is unable to remember anything. David sees Grant and is confused because he looks like Quentin. Julia notices a birthmark on Alexander. Julia finds another painting similar to the one she purchased, however by another artist (Harrison Monroe). David uses Grant’s resemblance to Quentin to scare Amy. Amy hears the mysterious breathing sound coming from a room in the antique shop.