ADRIAN and ELENOR MURDOCH are staying in Pine.
ADRIAN MURDOCH married ELENOR MURDOCH only recently.
Adrian Murdoch is a friend of JOHN PRATT with his environmental interests and from schooldays. He knew RHONA WORSFOLD at school and they were known for sexual get togethers but ended up marrying her sister. People speculate that a child of hers is his. He never says.
ELENOR MURDOCH's daughter Tessa is the Kitchen Trainee. She was single when she had her. RHONA WORSFOLD is her sister, recently separated from her husband, Bill Worsfold (not present). Thus ELENOR decided to marry her man ADRIAN.
For more details and clues, see the other suspects in their rooms.