Alice Ferrin (portrayed by Tamzin Outhwaite) was a minor supporting character in the Doctor Who story "Nightmare in Silver". She was a Captain in the Imperium military who was placed in charge of a punishment platoon stationed n the amusement park planet of Hedgewick's World of Wonders.
Sent to Hedgewick's for not obeying orders, Ferrin was later stripped of her rank of captain by the Eleventh Doctor, with Clara Oswald being "promoted" instead. Faced with the oncoming threat of the Cybermen, Ferrin knew the only way to stop them would be to implode the planet, and attempted to do so against Clara's orders. However, she was killed when a Cyberman shot her with its arm blaster before she could carry out the implosion.