Seven people from one traveller family abused and beat up to 24 vulnerable men they kept in captivity making them work without pay, a court has heard.
The six men and one woman deny servitude and forced labour charges at Luton Crown Court.
Police found men living in squalor at the Green Acres caravan park in Bedfordshire last September.
The Connors controlled and exploited the homeless people making considerable amounts of money, prosecutors claim.
The seven each deny charges of conspiring to hold a person in servitude and conspiracy to require a person to perform forced or compulsory labour.
The accused are: James John Connors (Big Jim), 34; Johnny Connors, 28; Tommy Connors (Junior), 26; James (Jimmy) Connors, 24; Patrick Connors, 20; Josie Connors, 30; and Tommy Connors (senior), 52.