Out of Blue is a 2018 crime drama film, written and directed by Carol Morley, and stars Patricia Clarkson, Mamie Gummer, James Caan, Toby Jones, and Jacki Weaver.

[3] Detective Mike Hoolihan (Patricia Clarkson) is investigating the murder of Jennifer Rockwell (Mamie Gummer), an astrophysicist at an observatory in New Orleans.

She had presented a talk on black holes in the evening but was found dead in the morning by the manager of the observatory (Toby Jones).

Mike passes out when she picks up a Florida snow globe, and imagines unique blue marbles similar to one that is on a string around her neck.

Her co-investigator and supervisor suggest that this looks like "The .38 Caliber Killer", who killed young women, but had not struck in many years.

Blue marbles had spilled all over the floor, and young Mike carries one out as she leaves with a police officer.

Mike gets into her car and drives away, knowing that she has solved the mystery of Jennifer's death, the .38 Caliber Killer and her own demons.

"[6] Robbie Collin of The Daily Telegraph wrote: "This New Orleans-set detective thriller from Carol Morley pulls off an undesirable yet weirdly impressive coup: the twist ending to its murder mystery is somehow simultaneously preposterous and obvious, like a clown car parping and swerving its way towards you from the far end of an airstrip.

"[7] Sophie Monks Kaufman of Sight and Sound wrote: "Out of Blue is incoherent, which isn't to say it's bad.