A Midsummer's Equation (2013)

Both are about a smart professor solving mysteries. Both are based on famous mystery novels................................................

So while Trinity of Shadow is a lot darker, the essence is in both the same; How far someone is willing to go for the one that they love. In both dramas there is a group that investigates a case that is linked to a past case. In both dramas it involves a family (with Trinity of Shadows its more than one) and both have a similar conclusion.