The Other One

BBC1, 9pm

It’s the night before Cathy’s (Ellie White, left) wedding and the bride isn’t thinking about the big day or the married life ahead of her – instead, she’s obsessing about a scuff mark on the wall that appeared after Marcus threw her the car keys. Cat agrees to spend her sister's last night of freedom driving her to the DIY store so she can repair the damage, but the shopping trip leads to an unexpected encounter.