Lie To Me - Smoked

A young lady is brutally shot dead in a hold up of her restaurant by armed robbers and Detective Wallowski gets Cal involved due to her past with the victims father who is dying of cancer and was leaving his successful 36 year old restaurant to his daughter and not his two estranged sons or his best friend who has worked with him all these years.  So who did it?  The obligotry red herring and the obviousness of it all makes this an ok if solid episode.