<P> Al Waxman co-starred as Cagney and Lacey 's good - natured and sometimes blustery supervisor , Lt. Bert Samuels . Carl Lumbly and Martin Kove played , respectively , fellow detectives Marcus Petrie and Victor Isbecki . Sidney Clute played veteran detective Paul La Guardia . John Karlen co-starred as Mary Beth 's husband , Harvey Lacey , and Tony La Torre and Troy Slaten played their sons , Harvey Lacey , Jr. and Michael Lacey , respectively . Harvey Atkin played desk sergeant Ronald Coleman . Jason Bernard originally had the recurring role of Deputy Inspector Marquette during the first two seasons . When the show was brought back in March 1984 following its second cancellation , Marquette had been replaced by Dep . Inspector Knelman ( Michael Fairman ) , who lasted the duration of the series . In the fourth season , Christine entered into a relationship with Sgt . Dory McKenna ( Barry Primus ) , who battled a drug addiction . After a tumultuous courtship , Christine left him and soon after took up with a more stable suitor , David Keeler ( Stephen Macht ) , a local attorney . </P>
<P> Al Waxman co-starred as Cagney and Lacey 's good - natured and sometimes blustery supervisor , Lt. Bert Samuels . Carl Lumbly and Martin Kove played , respectively , fellow detectives Marcus Petrie and Victor Isbecki . Sidney Clute played veteran detective Paul La Guardia . John Karlen co-starred as Mary Beth 's husband , Harvey Lacey , and Tony La Torre and Troy Slaten played their sons , Harvey Lacey , Jr. and Michael Lacey , respectively . Harvey Atkin played desk sergeant Ronald Coleman . Jason Bernard originally had the recurring role of Deputy Inspector Marquette during the first two seasons . When the show was brought back in March 1984 following its second cancellation , Marquette had been replaced by Dep . Inspector Knelman ( Michael Fairman ) , who lasted the duration of the series . In the fourth season , Christine entered into a relationship with Sgt . Dory McKenna ( Barry Primus ) , who battled a drug addiction . After a tumultuous courtship , Christine left him and soon after took up with a more stable suitor , David Keeler ( Stephen Macht ) , a local attorney . </P>
who played lacey 's husband in cagney and lacey
who played lacey 's husband in cagney and lacey
John Karlen
John Karlen