When a group of radical activists take over an energy company's annual gala, seizing 300 hostages, an ex-soldier turned window cleaner suspended 50 storeys up on the outside of the building must save those trapped inside, including her older brother.

Daisy Ridley's credible action chops and Martin Campbell's smooth direction keep Cleaner from being a mess, but this thriller borrows one too many elements from better predecessors to have a polished identity of its own.