Beloved of the home-workout brigade, the jackknife, or V-up, is a fail-safe way to tighten your abs. In fact, it’s one of Kayla Itsines’ go-to ab moves. But beware: it’s one you’re going to want to ...

"You know this is a child's life that you're messing with?" Breaking Glass Pictures has debuted the official trailer for an indie thriller from Canada (though set in the US) titled Jackknife, ...

Here are a few more things worth knowing about the drama flick. Jackknife starring has a Not Rated rating, a runtime of about 1 hr 27 min. Curious about the story behind it? Here's the plot: "A fun ...