The Exploits of Elaine (1914)

Jane Marple solves the mystery when a local woman is poisoned and a visiting movie star seems to have been the intended victim.

Not even the joys of parenthood can stop married sleuths Nick and Nora Charles from investigating a murder on a Long Island estate.

An unemployed drifter, Eric Stanton wanders into a small California town and begins hanging around the local diner. While Eric falls for the lovely waitress Stella, he also begins romancing a quiet and well-to-do woman named June Mills. Since Stella isn't interested in Eric unless he has money, the lovelorn guy comes up with a scheme to win her over, and it involves June. Before long, murder works its way into this passionate love triangle.

High society sleuths Nick and Nora Charles run into a variety of shady characters while investigating a race-track murder.

After two British Secret Intelligence Service agents are murdered at the hands of a cryptic neo-Nazi group known as Phoenix, the suave agent Quiller is sent to Berlin to investigate.

After learning that the death of his wife was not an accident, a former CIA Station Chief is forced back into the espionage underworld, teaming up with an adversary to unravel a conspiracy that challenges everything he thought he knew.

Japanese master spy Daka operates a covert espionage-sabotage organization located in Gotham City's now-deserted Little Tokyo, which turns American scientists into pliable zombies. The great crime-fighters Batman and Robin, with the help of their allies, are in pursuit.

At the insistence of Ruth Van Rydock, an old schoolfriend who is convinced that there is something wrong, Miss Marple agrees to visit 'Stonygates', the country house of Ruth's sister.

In Acapulco, Hercule Poirot attends a dinner party in which one of the guests clutches his throat and suddenly dies. The causes seem to be natural until another party with most of the same guests produces another corpse.

An ex-fireman with PTSD goes on the run when accused of a crime he doesn't even remember committing, leading him down a rabbit hole of conspiracy to the highest degree.