 " Hi , Infidelity " was written by John Enbom and directed by Michael Fields , marking Enbom 's twelfth writing credit and Fields 's sixth directing credit for the series . The episode features the second of three appearances by Laura San Giacomo as Harmony Chase . She and Enrico Colantoni had become friends when they co @-@ starred on the sitcom Just Shoot Me ! . They rekindled their friendship during production of " Charlie Don 't Surf " , San Giacomo 's first appearance , so they lobbied for more storylines together . Thomas was open to the possibility , saying , " I wouldn 't hesitate to go back to this , because I was really happy with how it played out . " 
 " Hi , Infidelity " was written by John Enbom and directed by Michael Fields , marking Enbom <a href='null_genetive' title='1'><mark>'s</mark></a>twelfth writing credit and Fields <a href='null_genetive' title='2'><mark>'s</mark></a>sixth directing credit for the series . The episode <a href='uninflect' title='3'><mark>features</mark></a> the second of three appearances by Laura San Giacomo as Harmony Chase . She and Enrico Colantoni <a href='been_done' title='4'><mark>had</mark></a> become friends when they <a href='uninflect' title='5'><mark>co</mark></a> @-@ starred on the sitcom Just Shoot Me ! . They rekindled their friendship during production of " Charlie Don 't Surf " , San Giacomo <a href='null_genetive' title='6'><mark>'s</mark></a>first appearance , so they lobbied for more storylines together . Thomas was open to the possibility , saying , " I wouldn 't hesitate to go back to this , because I was really happy with how it played out . " 
 Hi , Infidelity  was written by John Enbom and directed by micheal Fields , marking Enbom  twelfth writing credit and Fields  sixth directing credit for the series . da episode feature the second of three appearances by Laura San Giacomo as Harmony Chase . She and Enrico Colantoni done become frens when they coed @-@ starred on the sitcom jus Shoot Me ! . They rekindled their friendship durin production of " Charlie Don 't Surf " , San Giacomo  first appearance , soo they lobbied fa more storylines together . Thomas was open to tdapossibility , sayin , " I wouldn 't hesitate to go bk to this , because I was really happy with how it played out . "