Jaws 3 (1983) and the lead in the short-lived series Manimal (1983). He was then a series regular in Falcon Crest (1984–86), Counterstrike (1990–93) and Poltergeist: The Legacy (1999). He then returned to the United Kingdom, where he played the character of Harry Harper in Casualty between 2002 and 2008. MacCorkindale died in 2010. Barbara Kellerman, who played Claire Kapp, had previously had a regular role in 1990 (1977–78) and would later portray the White Witch in the BBC adaptation of The Lion, The Witch and The Wardrobe (1988). Quatermass also featured many familiar faces from British television and film in supporting roles, including Margaret Tyzack, Bruce Purchase, James Ottaway, Brenda Fricker, David Yip, Kevin Stoney, Gretchen Franklin, Brian Croucher and Chris Quinten, as well as the singer (and later television presenter) Toyah Willcox. Director Piers Haggard, who was the great-grand-nephew of author H. Rider Haggard, had been directing since the 1960s. Prior to Quatermass, he had directed the acclaimed Dennis Potter drama serial Pennies from Heaven (1978). Commenting on the script, Haggard described it as "a tremendous re-assertion of the importance of people, ordinary people, and how necessary they are in fighting evil". Following Quatermass, he directed The Fiendish Plot of Dr. Fu Manchu (1980) and the Disney Channel TV series Return to Treasure Island (1985). Executive producer Verity Lambert had first made her mark as producer of the first two years of Doctor Who (1963). Since then she had carved out an impressive career, first at the BBC with programmes such as Adam Adamant Lives! (1966–67) and The Newcomers (1965–69), and then at Thames Television with productions such as The Naked Civil Servant (TV film; 1975) and the series Rumpole of the Bailey (1978–92). She became Chief Executive of Euston Films in 1979; Quatermass was one of the first productions she oversaw in the role, seeing it as a project to make her mark on the company. She had clashed with Nigel Kneale in 1965 on the BBC arts programme Late Night Line-Up, when he attacked her for making Doctor Who too frightening for children. Despite this she held Kneale in high esteem, describing him as "a fantastic writer... hugely imaginative... considering the impact his work has had, I think he's undervalued". Following Quatermass she produced such shows as Danger UXB (1979), Minder (1979–85; 1988–94) and Widows (1983) for Euston before in 1985 forming her own production company,