The first thought that pops into your mind is “Did I change channels to Lifetime?”

But then, the title kind of points you that way — “Home Is Where the Killer Is.” “If that’s not a Lifetime Original Movie, I don’t know original,” you think. Not that “original” has much to do with it.

This thriller is as obvious as a cold sore. “Retired” doctor rents part of her house to sickly young women. A young woman recovering from cancer checks in.

We know where this is going. It’s not “The Adventures of Baron Munchausen,” we’re in for. It’s “Munchausen by Proxy,” or some murderously melodramatic version of it that is sure to play out.

But if her years of soap operas (“Days of Our Lives,” “The Young and the Restless,” “All My Children,” and um, “Melrose Place”) have taught Stacy Haiduk anything, it’s how to give all the menace in a character’s heart away by the glint in her eyes, and how to look good doing it.

Young Nicole (Kelly Kruger of “The Young and the Restless”) getting evicted, awaiting the results of her treatment, waiting for a “settlement check” from the lawyers of the doctor who blew the diagnosis? Retired Dr. Thomason (Haiduk) “reluctantly” renting her a room, passive-aggressively bad-mouthing Nicole’s pal (Anne Leighton), her hunky ex (Christopher Sean)?

Mere foreplay. Try to keep up.

“Glad you could finally make it.”

The warnings and warning signs are not exactly hidden.

“I think that woman has a screw loose.”

Haiduk never leaves any doubt.

The picture is everything you expect from such an obvious and unoriginal “Lifetime Original Movie,” and less, until its finale. And even then it’s not terrible, although it does manage to feel perfunctory and abrupt even there.

Renting from somebody? GOOGLE them, people. And look for the murderous glint in their eyes.

MPAA Rating: TV-14, violence, some profanity

Cast: Stacy Haiduk, Kelly Kruger, Anne Leighton, Christopher Sean and Beth Littleford

Credits: Directed by Kaila York, script by Christina Welsh. A MarVista/Netflix release.

Running time: 1:27