An egotistical detective fights to save his reputation when a series of religious killings threaten to show the community his true colours.

It's not just a matter of clarity, it's a matter or marketing: the linkage of the crimes to the 10 commandments is your story schtick, your hook, a premise that distinguishes your story from the 1,001 other serial murder mystery scripts piled up script reader's desks.

I will attempt to get it in. Thank you for the feedback.

Oh, then the logline ought to say so.