Slow Horses Season 6 Opener: Mourning, Murders, and a Mysterious Cover-Up

Slow Horses’ Season 6 premiere Circle of Life opens with River grieving his grandfather’s death as Slough House is hit by a double tragedy—an ex-agent is murdered and another dies under suspicious circumstances—hinting at a cover-up and payroll woes. Lamb and River pair up to investigate while Park intrigue and River’s estranged mercenary father collide with personal grief, setting a darker, more somber tone for the season.