Mystery surrounds the notary signature on the will of Carole Baskin's late husband Don Lewis.

Carole, the nemesis of Joe Exotic in Netflix docu-series Tiger King, was accused of murdering Don and feeding him to her tigers when he mysteriously disappeared in 1997.

She vehemently denies the claims and has never been charged with any crime.

After he disappeared, Carole took control of his estate thanks to a stipulation in his power of attorney that passed everything to her in 'the result of his death or disappearance'.

This fact alone generated plenty of conspiracy theories.

After enough time had passed, Carole had Don declared legally dead and inherited everything.

Carole has denied claims she murdered her husband

But now, a new mystery surrounds Don's will.

Notary Sandra Wittkopp, whose signature appears on the document which leaves control of Don's millions to Carole, says she doesn't remember ever signing it.

She told the Mississippi Center for Investigative Reporting: "I don't remember a will at all. I was the housekeeper."

Florida law does not require notaries to keep recordings or journals of their acts.

The notary signature has also been labelled "suspicious" by a handwriting expert.

Don disappeared in 1997 and was later legally declared dead

In an episode of Fox Nation's Crime Stories, former prosecutor Nancy Grace speaks to expert Thomas Vastrick about the will.

He said: "In conducting the examination of the durable family power of attorney and the will, both of which were created on Nov. 21 in 1996, I was struck by the uncanny similarity between each set of signatures ... the two witness signatures and the notary signatures.

"When I cross-compared each of those sets of signatures, they were just ridiculously similar to each other."

Carole believes Don ran away to Costa Rica

But according to the Mississippi Center, the statute of limitations for forgery has passed, meaning that even if someone had signed Wittkopp's name, they could no longer be prosecuted for it.

However, the housekeeper's claims come less than two months after the release of Tiger King, which garnered so much attention that the Hillborough County Sheriff's Office reopened the case.

Sheriff Chad Chronister has been asking members of the public to come forward with any tips on Don's disappearance or death, and he said he's been inundated.

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Animal rights activist Carole, who runs Big Cat Rescue, has refuted allegation that she had any role to play in Don's disappearance and his alleged murder.

She released a lengthy statement on her website, hitting back at the allegations repeatedly stated by Joe and others throughout Tiger King, including that she had ran Don's body through a meat grinder and fed him to the tigers in her sanctuary.

Carole believes Don ran away to Costa Rica.