A reputable detective finds himself caught up in a mishap of a possible alternate reality when his new murder case victim shows up alive the next day and causes him to question his sanity.

Happy I could help.

Hi Ben,
Thanks for your help. Your suggestion reads better.

Hi Aina Kwedhi,

This is how I see the story:

A prestigious homicide detective questions his own sanity and suspects whether there is an alternative reality when his latest case's murder victim shows up alive.

I hope this helps.
Good luck.