The Flashshowrunner reveals how Tom Cavanagh returns in series finale: 'Always part of the plan'

Cavanagh returns as Eobard Thawne, a.k.a.

the Reverse-Flash, in the May 24 episode, “A New World, Part Four.”

The Flashairs Wednesdays at 8 p.m. ET/PT on the CW.

Tom Cavanagh returns in ‘The Flash’ series finale as Eobard Thawne, a.k.a. the Reverse-Flash.Jack Rowand/The CW