A new HBO mockumentary will detail a fictional tennis battle that lasted seven days, aptly named 7 Days In Hell.

It is written by Girls writer Murray Miller – so we know it will be a hit!

Starring Games Of Thrones’ Kit Harington who shows off his comedic side, and funnyman Andy Samberg, the TV movie is already a must-watch.

Actual tennis star Serena Williams joins the cast, and speaks of the “reverse Blind Side”, where William’s family took in Samberg’s character Aaron Williams and made him play tennis.

Also starring Lena Dunham, David Copperfield and June Squibb, it promises to be hilarious!

It will air on July 11 on HBO.

Want more? Listen to this best bit from Jonesy & Amanda!