Fotis Dulos may have tried to frame his former employee for the death of his estranged wife, Jennifer Dulos, the employee's attorney says.

When Fotis Dulos was first arrested in his estranged wife's disappearance, the change in how he looked was apparent. The high-end real estate developer, who'd always had a full head of hair, had shaved it just days before Jennifer Dulos was last seen.

Attorney Lindy Urso says police told him that his new look was similar to his then-employee, Pawel Gumienny.

"The police did tell us their theory early on, that they thought he was trying to look like Pawel," says Urso.

Urso represents Gumienny, who is a key witness in the investigation.

Police believe Fotis Dulos used Gumienny's red truck on May 24 of last year - when he allegedly drove to New Canaan and killed Jennifer Dulos in her garage.

"If he was seen by anybody who knows the truck, it wouldn’t stand out as not being Pawel," says Urso.

Urso says in the days after, Fotis Dulos got ahold of Gumienny's phone and erased some of the contents.

"Pawel didn't do it, so I guess the only explanation would be that he was maybe trying to cast suspicion on Pawel," Urso says.

Fotis Dulos' arrest warrant says he also took Gumienny's truck to be detailed, then pressured his employee to change out the seats.

Gumienny did, but didn't throw out the seats because he became suspicious. He turned them over to investigators who say tests came back as positive for Jennifer Dulos' blood.

"Probably the best decision he's ever made... hanging on to those seats," Urso says.

Fotis Dulos killed himself earlier this year, but the cases against his co-defendants are ongoing.

Urso tells News 12 Gumienny will testify for the state against Michelle Troconis and Kent Mawhinney if their cases go to trial.

"This guy is just a hardworking immigrant," Urso says. "All he wants to do is work and provide for his family and this thing has really, really turned his life upside down... and it's not going to be righted until this thing is all over."

News 12 asked Urso for a picture of Gummieny, but he declined saying his client does not want to be in the spotlight.