Flying Colors (1917)

Brent Brewster, formerly a Yale athlete known for his pole vaulting prowess, is unsuccessful in business. When his wealthy relatives send him out to fend for himself, Brent joins a detective agency. After Craig Lansing, a family friend, hires Brent to investigate the numerous jewel thefts in Poughkeepsie, Brent works undercover at Lansing's house party and recognizes Captain Drake, an English crook. Although Brent temporarily forgets detective work when he meets Ann, the beautiful sister of Lansing's wife Ruth, Ann's remark that $40,000 a year would be enough for her to live on brings Brent back to the job. Meanwhile, Drake is intent on compromising Ruth, who flirts with him while Lansing is away. When Lansing returns unexpectedly, Brent accepts the blame for the flirtation to protect Ruth's honor, because of his love for Ann. After Brent vaults with a clothes pole through a window to prevent Drake's escape, Drake is exposed. Brent then learns that he has inherited a legacy which will enable him to satisfy Ann's monetary needs.