It’s hard to know what is most shocking.
The new movie has received an R-rating in the US and shows disturbing scenes of young women being tied up and beaten but also shows them taking their revenge on their abusers. Both circumstances seem to involve a lot of nudity.
However, it is probably the sight of Pamela Anderson as we have never seen before that is giving us the biggest chills.
The Baywatch queen stars alongside other major stars like Franco and Josh Duhamel in the lurid thriller set in an asylum.
The Instutute is the tale of a young woman in 19th Century Baltimore who is traumatised by the shocking loss of her parents.
She checks into the Rosewood Institute seeking help. Instead she is subjected to increasingly abusive and graphic experiments.
However, the doctors underestimate their latest victim and she soon plans her revenge which she naturally executes in a graphic and horrifying fashion.
The Institute stars Franco as one of the staff, the menacing Dr Cairn, and the Hollywood star added to his laurels by co-directing the movie with Pamela Romanowsky.
Another Pamela also pops up in a most unexpected way.
Pamela Anderson may be appearing in the Baywatch reboot later this summer, but there isn’t a red bikini in sight here.
The sex-symbol is almost unrecognisable as she stalks through her scenes here in a severe black dress and a total lack of glamour-girl make-up.
The shock plus the palpitations caused by the disturbing trailer almost left us in need of mounth-to-mouth resucitation.
Someone direct us to a nearby beach please.