Police are searching remote farmland for the body of a TV extra who went missing eight years ago before she could claim her parents' estate worth a reported £1 million.
There has been no confirmed sighting of Janet Brown, who lived in the Lowgate area of Hexham, Northumberland and who would now be 53, since June 2005.
Northumbria Police arrested a 59-year-old Tynedale man on suspicion of murder in December, and he was bailed pending further inquiries.
Ms Brown, who was single, loved to travel and for that reason friends were not concerned when she went missing.
Extensive inquiries around the world, including in Thailand, have drawn a blank and now police feel sure she has been murdered.
Previously, the arrested man was held on suspicion of fraud when concerns were raised about allegedly suspicious bank activity relating to the account of her dead parents, reported to be worth £1m.
Ms Brown, who worked on the TV show Distant Shores, never made a claim for her inheritance after they died.
Officers were scouring a farm near Sparty Lea, south west of Hexham, in the remote North Pennines.
Wearing fluorescent jackets, search specialists were seen at the 40-acre farm, which has not been worked for several years, dismantling a dry stone wall. They also have a digger and dump truck available to use.
It was expected the search could last for several weeks. The force has drafted in experts in archaeology and geophysicists.