Sometimes the pleasure of a good Lifetime film is how ridiculous it is. But there’s something to be said for a simple, grounded story done well.

Trapped in Her Dorm Room has the potential to be completely over the top. As written by Casey John, however, the story about an obsessive, entitled man who imprisons his crush in her college room over Spring Break is chillingly plausible.

Erin Wallace (Ciara Hanna) is a promising art student living a relatively sheltered life. She’s a scholarship student, which means she’s obsessed with her grades, much to the chagrin of her roommate Kaley (Aja Hinds), who wants her to cut loose and come to Daytona Beach for Spring Break. Erin demurs, arguing that she needs the quiet time to work on a major project.

Her decision appeals to Cade Rowlands (Will Sparks III), the nice guy in Erin’s program...