-Both have Ryu Joon Yeol
-psychopaths
-undercover theme
-hidden identity
-did I mention they both have Ryu Joon Yeol
-both movies we need sequels of

*dark show
*serial killings
*more than one psychopath
*great story
*great acting
*awesome OST to keep the feels

-both have orphanage themes to it
-tragic pasts with the characters
-cop related
-uncovering of truths