Colin Donnell is an American actor and singer best known for his performances as Billy Crocker in Anything Goes, Tommy Merlyn in The CW television series Arrow, Scotty Lockhart on the Showtime drama The Affair and as Dr. Connor Rhodes in the NBC medical drama Chicago Med (2015–2019). He also starred in the 2022 Netflix/Peacock miniseries Irreverent.

Anything Goes is a musical with music and lyrics by Cole Porter. The original book was a collaborative effort by Guy Bolton and P. G. Wodehouse, revised considerably by the team of Howard Lindsay and Russel Crouse. The story concerns madcap antics aboard an ocean liner bound from New York to London. Billy Crocker is a stowaway in love with heiress Hope Harcourt, who is engaged to Lord Evelyn Oakleigh. Nightclub singer Reno Sweeney and Public Enemy Number 13, "Moonface" Martin, aid Billy in his quest to win Hope. Songs introduced that later became pop and jazz standards are "Anything Goes", "You're the Top", "All Through the Night", and "I Get a Kick Out of You".