Re: preview spoiler / abigail / the lady of the lake/ mermai Home › Forums › Once Upon a Time › Season One › 1×13 "Whatever Happened to Frederick" › preview spoiler / abigail / the lady of the lake/ mermaid › Re: preview spoiler / abigail / the lady of the lake/ mermai February 13, 2012 at 9:09 pm #137232 hjbauParticipant I don’t think it is Kathryn. Though the Siren can become any woman she wants to. There are photos from this episode. Here is one of the siren. And here is a link to the rest of the pictures from this episode. http://www.spoilertv.co.uk/images/once-upon-a-time/season-1/promotional-episode-photos/Episode%201.13%20-%20What%20Happened%20to%20Frederick/ [adrotate group="5"]