Four friends. One wicked bet. Floodlit courts after closing. And someone in the clubhouse window is watching every forfeit.

In tennis, a “let” is a call made by the umpire or players that halts play, requiring the point—or a specific serve—to be replayed without penalty.

Every Friday night, after the members go home, four friends take over the floodlit courts at Whitmore Hills.

Jade Cross, the ruthless Legacy brat who has never lost anything gracefully.

Summer Barnes, her sunshine-sweet best friend, sneaking in on guest passes she's long since used up.

Andy Winters, the cocky brewery owner who never met a bet he wouldn't raise.

And you.

The flirting has been going on for years. Nobody has ever done anything about it.

Tonight, Andy makes it interesting. Every game you lose costs a forfeit, a dare that no one should refuse. Whoever wins the set calls the shots until security locks the parking gate at 11:00.

Then, halfway through the set, four phones buzz at once.

"Nice serve. Don't stop now."

A light is on in the clubhouse window above the courts. Somebody is up there. Somebody is watching. And every forfeit is about to have an audience.

A steamy, teasing game of dares, rivalry, and temptation between friends, where the only rule that matters is this: what happens on the court is just a game. Stepping off it together is something else entirely.