What movie has the fastest death of a main star, with no screen time afterwards?

There are plenty of examples of top-billed stars in movies dying relatively quickly in the world of the movie but are seen or heard from throughout in flashbacks or due to nonlinear filmmaking.

However--what are any examples of when a top-billed star in the movie died very early on and was never seen or heard from on screen again? Maybe this is more prevalent in a B-movie where a somewhat legit actor has top billing to provide legitimacy... but not much else...and dies early on.