Apex (Alfred Hitchcock Presents)

Apex is a 1962 television play that aired as an episode of Alfred Hitchcock Presents based on a short story by James Workman which was in London Mystery Magazine in March 1958.
The Wichita Beacon praised the "neat surprise ending".

Premise

An unfaithful husband and his girlfriend concoct a plan to murder his wife after she plans to divorce him, which will leave him penniless.