England's Paper Lace may be considered a 1-hit wonder here in the US, but they actually had something to do with a 2nd 1-hit wonder.
You see, Paper Lace had recorded "Billy, Don't Be a Hero" before Bo Donaldson & the Heywoods did, and their version topped the British charts before Donaldson similarly reached the top of the Hot 100. Paper Lace barely cracked the Hot 100 here. Then, their 2nd and final American single, "The Night Chicago Died", went all the way to #1.
"The Night Chicago Died" is set during the Prohibition era of the 20's, and references Al Capone in the lyrics. Fittingly, reruns of the original The Untouchables were in syndication at the time this song climbed the charts in 1974.
Following is a performance clip from Beat Club, as shown on VH1 Classic (now MTV Classic):