Sometimes Neil Entwistle could be so secretive about his career and finances that his mother-in-law suspected he was a British spy. She never had him down as a possible killer, though. The mysteries aside, he appeared to be an ordinary family man so proud of his wife and nine-month-old daughter that he set up a website to show them off. There were photographs of the couple's 2003 wedding, pictures from a Mediterranean cruise they enjoyed together and loving snaps of Rachel with baby Lillian Rose. The final shot, taken before Christmas, was captioned 'the happy family'. But Rachel and her infant ended up in a shared wooden coffin and the last snapshot anyone got of Entwistle was taken as he shuffled into a court in Boston, Massachusetts, wearing handcuffs, shackles and a bulletproof vest, to be arraigned for their murder. Those who knew the couple cannot understand how it came to this, but detectives think they might. Investigators allege that Entwistle's enthusiasm for the internet was not as wholesome as it might have seemed - days before his wife and child were shot dead in their bed, he had trawled the Web for tips on how to kill. He had also visited websites for escort services with names such as Blonde Beauties and Sweet Temptations and tried to contact fellow subscribers of Adult Friend Finder, a site that helps people find sexual partners, it is claimed. Meanwhile his evasiveness over money, detectives say, was down to one simple fact: he didn't have any. The lurid details of what police believe was a botched murder-suicide driven by the 27-year-old Briton's despondency over money and sexual frustration are fascinating the public on both sides of the Atlantic. They have also delivered a blow to relatives, who have discovered the man they thought they knew had been leading a shocking double life. 'To think that someone we loved, trusted and opened our home to could do this to our daughter and granddaughter is beyond belief ... we are only now coming to realise the level of his deceit,' said a statement issued by Rachel's parents, Joseph and Priscilla Matterazzo, in Boston. 'Rachel and Lilly loved Neil very much. Neil was a trusted husband and father, and it is incomprehensible how that love and trust was betrayed in the ultimate act of violence.' Entwistle, from Worksop in Nottinghamshire, England, met American-born Rachel through a rowing club while they were both studying at the University of York. 'Getting married to the most amazing woman in the world this summer: Rachel,' he enthused in a posting on the Friends Reunited website in 2003. Following Lillian's birth last year, they moved from England to the US because Rachel wanted to be closer to her family and raise their baby as an American. Entwistle, a computer engineer, failed to find work in the US and is said to have set up dubious get-rich-quick schemes on the web to raise cash. He refused to discuss money, which caused some conflict between the couple, State Trooper Michael Banks revealed in court documents. In fact, everything they spent was charged to credit cards, including a bill for US$6,000 worth of furniture and the monthly US$500 lease on a BMW. Ten days before the murder, they had moved into the Hopkinton house for a monthly rent of US$2,700 and the credit cards were groaning. 'This debt, along with Neil Entwistle's secrecy about the status of his work history and the family finances, appears to have caused strain in their relationship and by itself is indication to me of serious financial problems in the family which gave Neil Entwistle a motive to murder his wife and child,' Trooper Banks alleged. On January 16 and 17, Entwistle 'typed in internet searches regarding how to kill yourself, suicide, how to kill someone with a knife and euthanasia', Trooper Banks added in the affidavits. On January 20, friends who had been invited to a housewarming dinner party at the Entwistles arrived to find no one was home. On the bed police found the bodies of Rachel and Lillian - the mother shot through the head, the baby in the stomach. There was no sign of Entwistle, who was arrested at an Underground train station in London this month, having fled across the Atlantic. He told police he had left his house on the morning of the murder and returned to find his wife and child dead. Overcome with grief, he decided to kill himself with a knife but changed his mind because 'it would hurt too much'. Instead, his story goes, he drove to the home of his parents-in-law to collect a gun with which to shoot himself, but found they were out. So he flew to England instead. Investigators say his story does not stack up. The keys to the Matterazzos' home, for example, were found in his car and the .22-calibre gun used to kill his family came from the Matterazzos' cabinet. Veteran Boston lawyer J.W. Carney, who is not associated with the case, says that media coverage of the murder-mystery is 'the modern equivalent of putting someone in the coliseum before the lions are released'. Entwistle's lawyer agrees, complaining that his client will not get a fair trial. A poll by SurveyUSA shows that the public disagrees; 64 per cent of those questioned said they believed he could get a fair trial. But asked whether they suspected him of slaughtering his wife and baby, the signs were less hopeful for Entwistle: just 7 per cent said no.