Black Crab (Swedish: Svart Krabba) is a 2022 Swedish action thriller film directed by Adam Berg. Based on the 2002 novel Svart krabba [sv] by Jerker Virdborg [sv], the screenplay was written by Berg and Pelle Rådström. The film stars Noomi Rapace as Caroline Edh, a speed skater who is conscripted to join a team of soldiers for a dangerous mission to skate across sea ice behind enemy lines. The team is tasked with delivering a secret package to an island research base, which they are told could end the war.

The film opens with a flashback scene in which Edh is in a car with her daughter, Vanja, waiting in a traffic jam. Civilians are attacked by approaching enemies and the pair are forced out of the car.

A few years later Edh, now a soldier, is disembarking from a train. A lieutenant drives her to the base through a dangerous neighborhood and strands her there. Edh is attacked by refugees, and manages to fight her way out. Upon arriving at the base, she is taken for a briefing with Colonel Raad and she meets the other soldiers recruited for the special mission: Karimi, Malik, Granvik (a sniper) and Captain Forsberg.

The Colonel explains that the team must cross the ice-covered Stockholm Archipelago on skates and deliver some canisters to a research base, named Ödö, which he says could lead to victory in the war. Edh points out that this appears to be a suicide mission, but she is given a reason to try to make it: the chance to be reunited with Vanja, who has been found in a refugee camp.

The team leaves as the base is attacked the next day, and is joined by the lieutenant who abandoned Edh earlier, Nylund. Forsberg falls through the thin ice and drowns. Edh jumps in after her, saving the two packages from Forsberg’s backpack but leaving her body behind.

The group takes Edh to a house on land, where they warm her and themselves by a fire and Nylund is selected to be their new commander, according to the chain of command, though Edh disagrees.

The following morning, Edh hears the thrum of rotors and she catches Karimi using the radio. The helicopter fires a missile into the house as the team escapes, leading to the suspicion that Karimi is a traitor. He claims he was calling his girlfriend, a radio operator at the F28 base, bombed when Karimi was making his way to it.