'Regression' trivia and fun facts

On the first day of shooting of Regression Emma Watson tweeted that "she had so much fun in doing this film."

Alejandro Amenabar's return to the big screen after shooting his latest film, Agora (2009).

Emma Watson and Rachel Weisz are British actresses. Rachel Weisz has starred in The Fountain a film by Darren Aronofsky and in Agora an Alejandro Amenabar film. Emma Watson stars in Noah directed by Darren Aronofsky and in Regression directed by Alejandro Amenabar.

In the beginning, Amenábar was looking for a younger girl than Emma Watson to play Angela (who is 17). When he finally chose her, he was surprised because Watson looked much younger than 17 in the shooting.

Regression marks Alejandro Amenabar's return to the thriller genre with which he began his career back in 1996.

It's the second time that Emma Watson stars alongside an actor that has played Hamlet in the big screen. The first was Kennet Branaggh in 'Harry Potter and the chamber of secrets', an now next to Ethan Hawke in 'Regression'.

The film was shot in spring 2014 and will hit the big screen in October 2015.

Emma Watson previously starred with David Thewlis in the Harry Potter series.

'Regression' will be presented at the Festival of San Sebastian (2015).

'Regression' was filmed in Toronto and Spain.