Lifetime is premiering a new movie Saturday, July 14 called “The Mentor,” which sees current “Mistresses” star Jes Macallan as Elizabeth May, a woman who tragically lost her eight-year-old daughter and goes back to teaching to try to work through her grief.

At her new job, she is assigned a mentor in the form of “Battlestar Galactica” star Aaron Douglas as Paul Allenham, who is hiding a dark, violent past. Watch above as Paul’s obsession with Elizabeth gets more and more terrifying as she just wants to put her family back together.

“The Mentor” premieres Saturday at 8 p.m. ET/PT on Lifetime.