>>213831600
>is twins a reoccurring theme in dexter?
yes, in the original series, Dexter finds out he's father is alive, only to discover it's actually his father's evil twin, who is was already killed Deb and is going to kill Dexter.
Dexter kills him to avenge Deb, only to find out, to his relief, that the girl killed was actually Deb's twin.
there is that small arc about Dexter having an "evil" twin too, he's just a normal guy that doesn't kill anyone, so Dexter just leaves him alone, there's also the Laguerat twin, but she's not actually her twin, just some cuban woman that stole laguerta's social security after she died.