Don't Let Him Know was co-written by Bryan Adams and was the first American Top 40 hit for Prism. It was also the first Prism song to feature new vocalist Henry Small, and the 1981 album 'Small Change' it appeared on also featured another US hit with 'Turn on Your Radar'. It would be the last success for Prism.
Following this album, many of the original members of Prism had left, making the 1983 album 'Beat Street' pretty much a Henry Small solo album.
A Prism reunion with original singer Ron Tabak (who was fired in 1981 for lewd behaviour and run-ins with the law) was planned, but was nixed when in 1984, Tabak died from a Brain Hemmorage he recieved from a Motorcycle Accident
Prism eventually did reform in 1988 for a Greatest Package and a new song 'Good to Be Back', which was co-written by Bryan Adams