The second of Monogram's 1945 trio of "Cisco Kid" westerns, In Old New Mexico stars Duncan Renaldo as Cisco and Martin Garralaga as Pancho. The plot concentrates on heroine Ellen (Gwen Kenyon), a nurse accused of murder. Gallant Cisco "kidnaps" Ellen from the authorities, then sets about to prove her innocence, all with the cooperation of a sympathetic sheriff.