She'll be travelling alongside K9, sandwiched between the events of Seasons 15 and 16. She is/will be voiced by Jane Slavin, who has already voiced a shit ton of characters in Tom's audios, most notably as the voice of the Laan in THE SANDS OF LIFE, so... yeah, Four's now travelling with a Laan. CANON. We know little about the character so far, but we know she's a police officer from the 70s, and we all know how much Tom likes bossy women, so... Prepare for a ship even greater than 4/Romana 2.