According to contemporary reviews:
'"The Enemy Within" is not a war drama but a thrilling story of internal plotting with a dramatic vein of absorbing love and heart interest, including the well known Reg L. (Snowy) Baker, Australia's champion all-round athlete and stunt actor, as an Australian special agent who fought and defeated spies plotting against the quietude of the Pacific and Australia. It is an Australian production, and the whole of its seven acts teem with thrills and sensations you have never seen equalled. It features an 80ft. dive into a surging sea, a startling 300 feet [sic] climb down the cliffs on a rope, a leap from a flying motorcar to another, racing wheel to wheel, and a sensational rescue from the breakers. If you want something sensational it is here.'
Source: 'The Enemy Within', Townsville Daily Bulletin, 8 July 1918, p.3.
Other sources include a slightly different (and perhaps exaggerated) list of stunts:
'The roof-top chase, the sensational pantechnicon jump, the motor fight, the biggest "all in" fight ever screened, the struggle on horse-back, the magazine explosion, the fall from the cliff, and the record sensational dive of 800 ft. [sic] sheer into the raging sea must be seen to be believed.'
Source: 'The Enemy Within: Thrilling Situations', The Mail [Adelaide], 30 May 1918, p.17.
