'Verity' ending explainer: What should audiences believe?

Colleen Hoover's best-selling novel Verity has been adapted into a star-studded movie, headlined by Anne Hathaway, Josh Hartnett, and Dakota Johnson. Together, this trio makes up a torrid love triangle defined as much by dark desires as by lies and manipulation. So, in the end, who are we meant to believe? Mashable is going full spoilers. Proceed with caution. What's Verity about?

Credit: Amazon MGM Studios

Verity centers on Lowen Ashleigh (Johnson), a novelist who's been published but largely overlooked…