Emily Blunt reteaming with new brother-in-law Stanley Tucci onscreen

Actress Emily Blunt is reuniting her brother-in-law Stanley Tucci in a new movie based on the memoir of Colin Farrell's writer ex-girlfriend.

The planned big screen adaptation of Your Voice in My Head, about Emma Forrest's recovery from a suicide attempt, was originally set to star Emma Watson, but the 22-year-old beauty has since dropped out and now Blunt has been cast in her place, opposite Tucci as the writer's therapist.

The Oscar-nominated star tells DigitalSpy.com, "Emma's not doing it now, it's Emily Blunt, my sister-in-law. Hopefully we'll be making that in late spring next year."

Blunt and Tucci last worked together on The Devil Wears Prada in 2006, when the veteran actor struck up a romance with Blunt's sister, Felicity. They wed last year (12).

Filmmaker David Yates, who directed Watson in four of the Harry Potter blockbusters, had previously been attached to take charge of the project, but has since exited the movie too.