The ABC Murders (2018)

Set in 1933, an aging Hercule Poirot finds himself targeted by a mysterious correspondent signing as “A.B.C.” After seeking assistance from the police, he discovers that his former allies have moved on. When a murder occurs, Poirot realizes he must rely on his own skills to unravel the sinister plot. As he delves deeper into the case, the once-revered detective faces the challenges of his advancing years while racing against time to stop a cunning killer. The stakes rise as Poirot confronts both the past and present in a gripping investigation.