Everything about this one hit on all cylinders. There was something just viscerally satisfying about how the long dead and newly dead got justice in this one as Gemma manages to solve the murder of a long ago dead man that has connections to her current case. As an added bonus the thing that mattered the most to the perpetrator -- their reputation -- is the thing that suffered the most. Even if the perp gets off they will have lost the one thing they cherished above all. Yup, satisfying.