OLATHE, Kansas — Several items, including slave contracts and sex toys, belonging or related to five slain women were found in accused serial killer John E. Robinson Sr.'s home office and storage locker, several detectives testified Friday.

In addition, a Lenexa, Kansas, police detective identified Izabela Lewicka, 21, of Indiana, in several photos found among Robinson's things. He also testified that her name was on a six-page slave contract, entitled "Basic Slave Rules," that came from a large black briefcase in the locker and contained a list of 115 slave rules of sexual behavior.

Lewicka's body was one of two found stuffed into barrels on Robinson's rural Kansas property. Robinson is suspected of killing six women in all in Kansas and Missouri. He is currently on trial for the murders of three women in Kansas.

Also inside the black briefcase was the 1998 Social Security benefit statements for Sheila Faith, 45, and her 15-year-old daughter, Debbie, of Colorado, whose bodies were found stuffed inside another storage locker belonging to Robinson in Raymore, Missouri, the Lenexas police detective, Dan Owsley, said.

In addition to the statements, there were two 1997 checks, for $582 each, made out in their names. The detective also testified that Lewicka's Kansas driver's license, Social Security card, resident alien card, passport, high school diploma were inside a red box in Locker No. B18 of Olathe's Needmor storage facility. There was also a document indicating that Lewicka, a Polish immigrant, had given Robinson power of attorney.

Another detective, Mike Lowther, testified that investigators found a blue nylon bag in the locker containing several photos of victim Suzette Trouten and a number of her sex toys and paraphernalia from the bondage and discipline lifestyle, including a collar, a metal speculum, electrodes and a battery-powered electrical device.

A brown leather briefcase found in the locker contained a number of Trouten's personal effects, including her Social Security card, Michigan driver's license and birth certificate. The briefcase also contained several other items, including 42 pre-addressed envelopes to various members of the Trouten family and 31 sheets of pastel-colored paper, blank except the signature, 'Love ya, Suzette.'

In addition, Detective Dawn Layman said she found a yellow legal pad listing names, home and e-mail addresses of Trouten's friends and family. Trouten's aunt, Marshella Chidester, testified earlier in the trial that her niece had sat at her kitchen table shortly before she left Michigan and written down the contact information.

In a closet in Robinson's home office, Owsley said they found more Social Security benefits statements, from 1999, bearing the names of Faith and her teenage daughter. They also found computer printouts and notes containing various email addresses, including that of slavedancer, posseder and eruditemaster.

Friends of Trouten have testified that Robinson communicated through those e-mail addresses under the aliases of Tom or JT, JR and Jim Turner. From the bottom drawer of Robinson's desk, investigators found various business documents containing the name of Beverly J. Bonner, a 49-year-old woman whose body was also found stuffed in a barrel inside the Missouri storage locker.

The managers of the Needmor storage facility also took the stand Friday, testifying that they often saw Robinson visiting the storage site, alone on all but one occasion when he was with a small child. Linda Harvey, one of the managers, testified that a record of gate activity on March 1, the date that Trouten disappeared, shows that Robinson entered at 2:24 p.m. and exited six minutes later.

Robinson is on trial for two counts of capital murder in the deaths of both Trouten and Lewicka. He is also charged with murdering Lisa Stasi in and arranging for his brother to adopt Stasi's four-month-old daughter, Tiffany, in 1985. (The state did not have the death penalty at that time.) Once the Kansas trial is completed, Robinson will face charges of killing the three women in Missouri.

A former correspondent for Newsweek and People Weekly, Sue Miller Wiltz is currently writing a book about Robinson for Pinnacle Books. She is covering the trial for Courttv.com.