Let's Cast J.K. Rowling's 'The Cuckoo's Calling' With Harry Potter Actors

Apologies in advance to Rupert Grint.

Earlier this week, I told you why every Harry Potter fan should be reading J.K. Rowling's Robert Galbraith books, but as we learned with the author's first series, the novels are only one half of the equation.

It's only a matter of time before "The Cuckoo's Calling" and "The Silkworm" become films, so why not cast them with the most impressive pool of British actors ever assembled?

Here are my picks for "The Cuckoo's Calling," using only "Harry Potter" cast members.

Cormoran Strike - Brendan Gleeson (Mad Eye Moody)

This is probably the biggest stretch of the entire cast, but there's something about Gleeson that perfectly captures both Cormoran's size and his attitude. Plus, there needs to be more Brendan Gleeson in everything.

Robin Ellacott - Emma Watson (Hermione Granger)

Strike's assistant and protege is described as a pretty 25-year-old with strawberry-blond hair, and personality-wise Robin and Hermione bear the strong resemblance across the series.

Lula Landry - Danielle Tabor (Angelina Johnson)

The supermodel at the heart of the mystery seems like a perfect role for the former Gryffindor chaser.

John Bristow - Daniel Radcliffe (Harry Potter)

Lula's adoptive brother would be a great change of pace for Radcliffe. I'll just leave it at that.

Matthew - Matthew Lewis (Neville Longbottom)

The drastically transformed Lewis is the perfect fit for Robin's handsome, rugby enthusiast fiancé.

Evan Duffield - Robert Pattinson (Cedric Diggory)

A celebrity bad boy with a dark side and one half of a famous couple? I think Pattinson can handle that.

Ciara Porter - Clémence Poésy (Fleur Delacour)

The role of Lula'a friend and fellow model could only go to the champion from Beauxbatons.

Guy Somé - Luke Youngblood (Lee Jordan)

The former Quidditch announcer seems to have embraced trendy fashion in the years since the series, which would fit the fashion designer character.

Freddy Bestigui - Robert Hardy (Cornelius Fudge)

The movie producer who lived two floors beneath Landry annoyed me in a way that reminded me of a similar, more wizardly, jerk.

Tansy Bestigui - Helen McCrory (Narcissa Malfoy)

Bestigui's younger wife suffers mostly silently in her damaged marriage, not unlike one half of the Malfoys.

Tony Landry - Bill Nighy (Rufus Scrimgeour)

This is who I'd cast as Lula's uncle even if I wasn't pulling exclusively from the Potter movies.

Lady Yvette Bristow - Fiona Shaw (Petunia Dursley)

Depending on who you ask, Lula's adoptive mother was either loving or a lunatic. Aunt Petunia's differing opinions of Harry and Dudley prove Shaw can handle the balance.

What do you think? Who would you cast? Let us know in the comments!