NY- The Strahan vs. Strahan divorce case took another bizarre turn yesterday as the Giants sack king's estranged wife charged he once used a hidden camera to peep on her sister, according to court papers.

Jean Strahan claimed that Michael Strahan used the camera, hidden in a clock radio, to capture her sister "in various stages of undress," when the Strahans were dating in 1997.

"[He used] a hidden camera in a clock radio that he gave her and virtually insisted that she keep in the bedroom where she slept," Jean Strahan, 41, said in a sworn affidavit.

The Peeping Mike accusation emerged as the soon-to-be-former couple continued to feud over their bad-blood breakup.

She is demanding he cough up about $14 million, but he insists she should only get about $7 million.

Jean Strahan dropped a bombshell by claiming Strahan pursued an "alternative lifestyle" with married TV doctor Ian Smith after the couple broke up.

But she later claimed she didn't mean to hint they were gay - just serial cheaters.

Buried amid hundreds of pages of mundane claims and counterclaims in their divorce case is the explosive allegation that Michael once tried to spy on Jean Strahan's sister when she came to visit.

Jean Strahan was trying to counter Michael Strahan's claim in an earlier affidavit that she had no reason to fear him because the police had never been called to break up a domestic dispute between them.

Not so, said the football star's estranged wife.

"They were in our home at least twice as a result of violent and lewd actions of [Michael Strahan]" before their marriage in 1999.

Jean Strahan had already publicly claimed that her future husband beat her before they wed, but never discussed the video-voyeur claim, which supposedly took place when they lived in East Stroudsburg, Pa.

Michael Strahan's lawyer, Robert Penza, did not return calls for comment on the latest twist in the bitter divorce case.

The couple has spent the past year trading legal salvos through their lawyers over everything from the air conditioning in their Montclair, N.J., mansion to Michael Strahan's habit of honking the horn when he drives.

She once tailed his car when he drove their twin girls to an ice show at the Meadowlands.

He groused that she was inviting too many of her girlfriends over for weekly parties, where they received facial treatments.

He complained that she risked damaging his large collection of fancy clothes by switching off the air conditioning when she went out of town during a steamy week last summer.

She demanded that he take his stuff out of the house because it was clogging up her closets. The divorce case is back in court Monday.