Heres the significance of that Amy Knightly photograph.

Warning: spoilers forThe Jettyepisode one.

Inside the pages of a book, Hannah finds a picture of her father from before she was born.

Laura Marcus and Bo Bragason in school uniforms in The Jetty on BBC One

Oh my god, dad looks so young!

she says, before asking Whos that girl in the photo?.

Embers reaction is one of stunned disbelief.

A screengrab of hands holding a photograph of a young girl sitting on an older man’s lap in BBC drama The Jetty

Thats Amy Knightly, she tells Hannah, the girl who went missing.

The Jetty is available to stream nowon BBC iPlayer.