Tell any man that his daughter was created with the sperm of a dead religious leader and they'll probably get angry – look at Tom Cruise.

Tom Cruise's lawyer is on the warpath after Tom Cruise: An Unauthorised Biography by Andrew Morton was published, a book that makes all sorts of wild claims about Tom Cruise's Scientology beliefs while alluding to claims that Tom Cruise's daughter Suri was sired with dead Scientology founder L Ron Hubbard's sperm.

Plainly ridiculous, we know. Everyone knows that Tom Cruise has dried Hubbard's sperm out and uses it as a creepy pesto seasoning.

Although there's so much to mock Tom Cruise for – his tiny height, his weird sincerity, his constant whooping, Lions For Lambs – people return again and again to Scientology as a stick to beat him with and, since his only defenders are Will Smith and David Beckham, it has to be a lonely place for him to be. 

The problem with Scientology is that it's so secretive – whereby in Christianity children are taught from an early age that the world was made when an all-powerful fairy invented everything and that his hippy son embarked on a short-lived apprenticeship once, Scientologists have to earn their knowledge. And it's that sort of secrecy which has allowed Andrew Morton's recently-published book Tom Cruise: An Unauthorised Biography to cause such a stir.

Playing on the public's long-held suspicions about Tom Cruise – that nobody could be that intensely oversincere all the time and be remotely normal – Tom Cruise: An Unauthorised Biography features interviews with old neighbours and friends and narked-off former Scientologists to paint a picture of Tom Cruise complete with all sorts of outlandish remarks that have got Cruise's lawyer coiled like a snake.

In particular, there's a line in the Tom Cruise biography that hints at claims that Tom's daughter Suri Cruise was created using Scientology founder L Ron Hubbard's dead sperm:

"Some sect members believed that Katie Holmes was carrying the baby who would be the vessel for L. Ron Hubbard's spirit when he returned around the galaxy."

And that, along with claims that Tom Cruise is the Scientologist second in command, has caused Cruise's lawyer Bert Fields to speak out. He said:

"His book is a rehash of tired old lies about Tom and his religion, some new grotesque lies, like the sick comparison of his child to 'Rosemary's Baby' and the nutty assertion that he's the No 2 head of the Church of Scientology. He (Morton) has made a number of claims that are false and demonstrably so. Clearly the book is actionable, but I'm not commenting on anything to do with legal issues."

Of course, we're almost completely certain that Tom Cruise didn't stuff Katie Holmes full of L Ron Hubbard's sperm. Just look at Suri Cruise – she looks so much like Tom Cruise that we keep half expecting her to leap around on a sofa whooping like an air raid siren any minute now.

Plus, Suri Cruise can't be made of L Ron Hubbard's sperm, because as far as we know we're the only ones who own a canister of it. Where else did you think we got that idea for pesto seasoning idea from? Seriously, you haven't lived until you've tried our sour cream, pesto and dead old man's dried-up jizz dip, you really haven't.

Read more:

Cruise biography branded 'sick' – ITN