"Shadow of a Doubt" is the title of a song written by Tom Wopat

Tom Wopat

Tom Wopat is an American actor and singer. He first achieved fame as Luke Duke in the long-running 1979 television series The Dukes of Hazzard, along with John Schneider. He also played Jeff, one of Cybill Shepherd's ex-husbands in the TV series Cybill.-Life and career:Wopat was born in Lodi,...

 and Robert Byrne, and recorded by American country music artist Earl Thomas Conley

Earl Thomas Conley

Earl Thomas Conley is an American country music singer-songwriter. Between 1980 and 2003, he recorded ten studio albums, including seven for the RCA Records label. In the 1980s and into the 1990s, Conley also charted more than thirty singles on the Billboard Hot Country Songs charts, of which...

. It was released in May 1991 as the first single from the album Yours Truly. The song reached #8 on the Billboard

Billboard (magazine)

Billboard is a weekly American magazine devoted to the music industry, and is one of the oldest trade magazines in the world. It maintains several internationally recognized music charts that track the most popular songs and albums in various categories on a weekly basis...

Hot Country Singles & Tracks

Hot Country Songs

Hot Country Songs is a chart published weekly by Billboard magazine in the United States.This 60-position chart lists the most popular country music songs, calculated weekly mostly by airplay and occasionally commercial sales...

chart.

Chart performance

"Shadow of a Doubt" debuted on the U.S. Billboard Hot Country Singles & Tracks for the week of June 1, 1991.

Chart (1991)	Peak position
U.S. Billboard Hot Country Singles & Tracks	8
Canadian RPM Country Tracks	4