Frankie returns to Glasgow to investigate a message left by her dying aunt.

Following a lead that may unravel the mystery of her past, Frankie places herself in danger; elsewhere, Tess makes a fool of herself on live television.

Cat and Sam enjoy their honeymoon period; Tess turns up at Lou's flat unannounced and gets more than she bargains for.

Cat lies to Sam, jeopardizing their relationship by doing so.

Ed organizes a surprise party for Tess's 30th birthday.

Frankie discovers the truth about her childhood; Tess gets an audition.