Is How To Kill Your Sister coming back?

After 8 years of silence, Anna finds herself on the doorstep of her older sister Kat in a car with a coffin mounted on the roof. Anna announces she is terminally ill and wants Kat to accompany her on her last trip to Spain. Along the way Anna finally wants to find out why Kat abandoned her after the death of their parents. 

The two estranged sisters set off on a hilariously dark road trip, doomed to derail. The closer they get to their destination, the harder it becomes to hide the secrets they both harbour.