Caity Lotz, star of MTV’s new horror-comedy show “Death Valley,” stars in writer/director Nicholas McCarthy’s just-wrapped ghost story The Pact. The 24-year-old Cali girl  plays a woman tormented by a malevolent force while living in the house of her deceased mother.

The film, based on MacCarthy’s short of the same name (premiered at this year’s Sundance Film Festival), also stars Haley Hudson (Killer Pad), Kathleen Rose Perkins (The Island), Agnes Bruckner (Vacancy 2: First Cut), Sam Ball (“The Event”) and Casper Van Dien (Starship Troopers).

Lotz is an up-and-comer best known for her recurring role as Anna Draper’s niece Stephanie on AMC’s “Mad Men.” She will next be seen as Officer Kirsten Landry on MTV’s “Death Valley,” premiering Monday, Aug. 29.