The 2023 action-thriller *Ruthless*, directed by Art Camacho and starring Dermot Mulroney, has found unexpected new popularity on Prime Video years after its release, climbing into the platform's top ten most-watched titles above bigger-profile films such as World War Z and Primate. The film follows Mulroney's character Harry, a grieving wrestling coach whose daughter was murdered, who becomes an unlikely protector to one of his students, played by Melisa Diaz, after uncovering a dark secret in her life.

Despite a modest critical reception, including a 38% score on Rotten Tomatoes, the film has drawn praise for Mulroney's committed lead performance, even as reviewers noted uneven dialogue and a muddled plot attributed to its four credited writers. At 92 minutes, the film is being highlighted as a compact, entertaining B-tier action thriller that has outperformed expectations in streaming viewership despite its lukewarm critical standing.