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So random plot line for a mystery game:

(Jail scene. You the main character are a detective looking a man in the face. This man has been arrested for the murder of two people. Your job is to prove either his innocence or his guilt, but don't make the wrong choice. The man suffers from memory loss and therefore cannot state his case alone. *his family hired you to prove his believed innocence?*)

"I can't even remember pulling a trigger.. Frankly, I don't remember much about that day at all."

Briefing:

The guy under prosecution name is Leon Thomas.
He went to a musical on saturday 7 p.m.
He was accompanied by his daughter Anne Thomas.
The play was in a small theater and not many people were there because it was a closed screening.
Among the people were the actors and actresses, Leon, Anne, a couple of staff, and about 10 other people there for the play.
Leon was accused of murdering the lead singer in the play.
This accusation was made by Dr. Ramon King.
During the play Dr. King was siting right next to Mr. Thomas.
After the lead actress was shot Dr. King warned everyone that Mr. Thomas had shot him.
Mr. Thomas was found with a gun in his hand and Dr. King lay on the floor murdered.

Your job, to find out what doesn't add up.