It’s clear almost from the get-go what ails Lizzie ( Noomi Rapace ) in Kim Farrant’s “Angel of Mine,” a chilly stalker mystery with a single, trembly mood.

“You haven’t been doing so great” is the glaring understatement offered by her ex-husband ( Luke Evans ), by way of explaining why he’s seeking full custody of their young son. Popping pills and flinching at every shadow, Lizzie appears perpetually on the verge of a nervous breakdown — a ledge, we learn, she’s been dancing on for the past seven years. That was when her baby daughter perished in a fire and Lizzie appeared to lose her grip on reality. Now, she’s become fixated on Lola ( Annika Whiteley ), a doll-faced neighborhood seven-year-old, following her to the ice rink and peeping in the windows of her family’s luxury home. And that’s just for starters.