CATFISH: Dir: Ariel Schulman, Henry Joost.

Catfish is a strange but very enjoyable film. It's sort of a documentary, but its fly-on-the-wall approach contains more than a few scenes that appear set up. Oddly, it doesn't really matter: there is a real and fascinating story here, sort of a cautionary tale, but with something approaching happy endings all round.

t's a tricky film to describe at any length because the cover implores viewers not to give away what happens. So I'll try not to. The film starts with directors Ariel Schulman and Henry Joost making a documentary about her brother Nev, a photographer. He is contacted over the internet by a young girl, Abby, who makes a painting from one of his photographs.

An online friendship ensues with both Abby and her older half-sister and with the latter it seems almost ready to become a relationship.

But all is not as it seems and when the filmmaking trio sense things amiss they head out to find Abby and her sister. What they discover is a surprise.

How much of Catfish is real, how much is re-enactments, is hard to tell, but as a parable for the internet age, it is touching and considerably smarter than you expect. It's a film with real heart too and well worth seeing.

Comic book heroes can have some pretty silly back stories, but nothing gets much sillier than Thor (***). This is the final superhero to be shoehorned into the upcoming Big Reunion movie which will unite Iron Man, The Hulk, Captain America and Thor (am I missing anyone?). The difference is that while the others are basically yer normal guys, Thor is actually a mythical Norse god. So there are possibly some suspension of disbelief issues here… Ignoring all that, it's quite a fun movie, directed by Kenneth Branagh as if it's high Shakespeare with biffo special effects and a very respectable cast (including no fewer than two Best Actor Oscar winners!).

Another week another Jason Statham movie. I think I said that last week. This time it's Thirteen (***) , which is a remake of a rather good French film. It involves a young bloke who, needing money for his family, intercepts a letter meant for his neighbour containing rules to join a ‘game' which will make him a packet. The catch – which he later discovers – is that it involves playing something similar to Russian roulette. Jase is actually fairly incidental to the story and what was once a taut claustrophobic black and white thriller is now kinda silly. Shame.

In Perrier's Bounty (****) Michael (Cillian Murphy) is a chancer. He owes money to Brendon Gleeson's mob boss Perrier but complications ensue after an altercation with the debt collectors during which his helpful neighbour shoots one of them. So Michael finds himself on the run along with her and his own unreliable and possibly terminally ill father. What with In Bruges, The Guard and this, the Irish seem to have a fine handle on blackly funny crime thrillers. While not quite as sharp as those two, Perrier's Bounty is still good stuff.

Overzealous scientists are at it again in The Frankenstein Syndrome (***), trying to create a 'universal healing serum” from illegally harvested stem cells. Told in flashback after the whole shebang has clearly gone horribly wrong, pretty young researcher Elizabeth joins the secret research team, becoming quickly obsessed with their mission before slowly realising that no one gets to leave, except possibly the odd reanimated corpse. Tough, violent and tightly made, this modern variant on Mary Shelley's oft-told tale suggests that writer/director Sean Tretta is one to watch. Horror fans will be happy.