Sexual intrigue ran neck-and-neck with police intrigue in the six-part British miniseries Undercover Heart. The three main characters were all members of the same London undercover detective unit: Tom Howarth (Steven Mackintosh); his wife, Sarah May (Lisa Coleman); and Tom's best friend, Matt Lomas (Lennie James). While posing as a pimp to smash a prositution ring, Tom disappea...