The Flash’s Rick Cosnett Teases “Secrets” With Tom Cavanagh

The caption? “Secrets.”

Of course, there’s been a good deal of speculation that Cosnett’s Eddie Thawne would eventually turn out to be a villain — either the 25th Century Eobard Thawne, one of the men to go by the Reverse-Flash, or Malcolm Thawne, the villain known as Cobalt Blue.

While “secrets” doesn’t confirm anything of the sort, seeing him with Cavanagh — whose own character was recently revealed to be a Reverse-Flash — is likely to get fans talking…

The Flash returns March 17 at 8 p.m. ET/PT on The CW.