HOPKINTON, Mass. -- The man accused of killing his wife and daughter in their Hopkinton home in January is expected to be arraigned in a Massachusetts courtroom Thursday.

NewsCenter 5's Jim Morelli reported that Neil Entwistle is expected to return to the United States late Wednesday and be arraigned Thursday on charges he murdered his wife, Rachel, 27, and daughter, 9-month-old Lillian Rose. After his return, Entwistle is expected to be transported to the Hopkinton Police Department in an unmarked Massachusetts State Police car for booking. He will then go to court.

The alleged murder weapon was used by Rachel Entwistle's stepfather for target practice one day after the alleged murders, according to court documents.

Court documents released Monday shed new light on the double murders and painted a dark picture of Neil Entwistle.

Court documents unsealed over the objections of Middlesex District Attorney Martha Coakley show Neil Entwistle made conflicting and inconsistent statements to his family and to investigators in the days after his wife and daughter were found shot to death in their home. The documents show Entwistle told his parents he called police after discovering Rachel and Lillian's bodies, but there is no evidence to support that.

The documents also say Neil Entwistle went up to the bedroom and saw blood on his daughter and saw that both his wife and daughter had been shot. Investigators found, however, that the baby's face was covered with a pillow and there was no immediate, visible evidence that either Rachel or Lillian Entwistle had been shot. The shots were later confirmed by an autopsy.

The documents also revealed that Neil Entwistle was extremely secretive toward his in-laws and wife. The Matterazzos were led to believe Neil Entwistle had some type of secret government job in England that he could not talk about. Documents say Rachel asked Neil Entwistle questions about their finances, but he would not divulge any information, which caused some conflict between the couple. Rachel told her mother that their money apparently had been tied up in offshore accounts, although Neil Entwistle would not talk about it.

Meanwhile, court documents say, in the four days prior to Rachel and Lillian Entwistle's deaths, Neil Entwistle's computers show he visited Web sites like Adult Friend Finder and conducted Internet searches for escort services, including Eye Candy Entertainment, Exotic Express, Sweet Temptations and Blonde Beauties Escort Service.

Investigators said Neil Entwistle also surfed Web sites that described how to kill people. Neil Entwistle typed in Internet searches regarding how to kill yourself, suicide, how to kill someone with a knife and euthanasia.

Despite mounting debts, the Entwistles purchased $6,000 worth of new furniture and mattresses just days before the deaths.

The court documents also revealed that Neil Entwistle was in such a hurry to leave the United States, that even though he had purchased a ticket to fly to London for Saturday afternoon, he bought a second, one-way ticket at the last minute so he could leave six hours earlier.

Family Priest Reacts To Double Murder

The Rev. Bill Mackenzie of the Church Of St. Peter in Plymouth has both celebrated and grieved with the family of Rachel and Lillian Entwistle.

NewsCenter 5's Sean Kelly said Mackenzie was there for Lillian's christening in December and he presided over the funeral of the mother and child.

Mackenzie said Lillian's baptism was an exceptionally joyous occasion.

"They seemed like a couple concerned for each other, very concerned for their baby," he said.

Less than two months later, Mackenzie gave the homily at Rachel and Lillian's funeral. He said, "God didn't do this, but evil exists among us." Neil Entwistle did not attend the funeral.

"To hear nothing from him was strange to me," Mackenzie said.

During the service, Mackenzie never mentioned Neil Entwistle's name.

"I think I kept hoping against hope that it wasn't going to be Neil who got arrested," Mackenzie said.

Mackenzie said Rachel's parents expressed strong feelings of betrayal by their son-in-law.

"This is someone they loved, someone they respected and gave themselves to," Mackenzie said.

Mackenzie followed news developments of Neil Entwistle's arrest in the murder case while consoling Rachel's parents Priscilla and Joseph Matterazzo.

"I think what this is going to do is drag it out more and more through the waiting and trial. It's going to be much more difficult to bring closure," Mackenzie said.

Mackenzie said Rachel's parents are keeping their feelings about Neil Entwistle's guilt or innocence to themselves.

"They take comfort that the case is one step closer to being solved, but as far as being happy about it, my own feeling is that there's no happiness to be had in this situation, ever," Mackenzie said.

Mackenzie said he's been given no indication from the family why all of this happened. Whether it was the finances, Neil Entwistle's psychology or failed businesses, Mackenzie said, no one will know until all of the facts come out.