Murder Mystery for 300-500

I work for a non-profit and we would like to host a murder mystery dinner play for a fundraising event. Do you have any that would accommodate that?

Any suggestions?

My response:

I think you're looking for something like murder mystery dinner theatre (where a group of actors performs the murder mystery for an audience).

I'm afraid I have no experience of this - I suggest you search online for "murder mystery dinner theatre" (or similar terms) local to you.