Many Emmerdale fans think Cain has rumbled his "brother" Caleb's secret after noticing a missing photo album.
Caleb, played by Will Ash, turned up in the village over Christmas, angry at his brother Cain for not telling him their mum, Faith, had died. Caleb believed Faith had died years ago, which is what Cain had told him.
In recent weeks, viewers have been suspicious that Caleb may not be who he says he is, or that he may be hiding a dark secret. Some were left convinced he was an undercover police officer, but soap bosses have ruled this out, reports the Mirror.
