Season 10 of "Bachelor in Paradise" begins Monday night, July 7, with fan favorites from the "Bachelor" franchise looking for a second (or third) shot at love. The upcoming season also introduces fans to a whole new location -- Costa Rica -- and more. Ahead of the season premiere, we're taking a look at everything you need to know.

Sam McKinney, considered a villain from Jenn Tran's "Bachelorette" season, also turned heads when he drove in late on a motorcycle. Over the course of the three-hour premiere, couples began to form — as did love triangles. Here's what to know about the couples in the making, plus who went home.