Signal One (also known as Bullet Down Under) is a 1994 Australian crime film directed by Rob Stewart and starring Christopher Atkins, Mark Jackson, Richard Carter, and Virginia Hey.

[3] It was made partly with finance from the NSW Film and Television Office and the FFC.

[4] Martin Bullet is a former cop from Los Angeles who has just moved to Sydney, Australia to escape difficulties back home.

Joining the Sydney police force, Martin is given Jack Moran for a partner after the latter lost one recently.

The two become involved in the unsavory dealings of a vicious crime syndicate while trying to solve the murder of Jack's last partner.