Drop

A widowed mother's (Meghann Fahy) first date in years at an upscale restaurant takes a terrifying turn when she's bombarded with anonymous threatening messages and videos on her phone through an app that can only be used if the sender is nearby.

Her date tries to find out where the sender is, but then she gets another "drop" telling her to check her security cameras and when she does, she sees a masked intruder in the house. The next message threatens to harm her young son (Jacob Robinson) if she tells her date what's going on. When she asks what the person wants, she's told she must kill her date, or her son will be murdered.