A simple missing person's case takes a dramatic turn as Frank and Lu find themselves in the middle of a dispute over the opening of a new Shakespeare Centre where it's clear that no one is what they seem.

At the grand opening of the Arden Museum's new Shakespeare Centre, Frank and Lu are bemused when the evening is interrupted by The Society Of Herstorians, a local protest group unhappy about the museum's demotion of Stratford's historical women of note.

It's a bad night for the museum's director Sir Tim, as academic rival Dr Middleton speaks up in support of the protesters, his wife Lady Athena is bored and wants to go home, and then curator Lucian goes missing just as he's needed to assist in the ribbon-cutting.

But what starts out as a straightforward missing person's case takes a turn for the worst when there is a murder at the museum - and Frank and Lu realise that no-one is what they seem.