Rattlesnake

When a single mother accepts the help of a mysterious woman after her daughter is bitten by a rattlesnake, she finds herself making an unthinkable deal with the devil to repay the stranger.

Rattlesnake is a 2019 drama mystery movie directed by Zak Hilditch, starring Carmen Ejogo, Theo Rossi, Emma Greenwell. It holds an IMDb rating of 4.7/10 from 10,117 votes and runs 1h 25m.