The couple divorced in 1973 , but worked again together in Final Assignment ( 1980 ) and The Dance Goes On ( 1991 ) , the later also featuring their son Mathew Almond ( born in 1968 ) . The couple divorced in 1973 , but worked again together in Final Assignment ( 1980 ) and The Dance Goes On ( 1991 ) , the latter also featuring their son , Mathew Almond ( born in 1968 ) .