Attorney John Phillips held a news conference in Tampa on Monday and announced an independent investigation into Don Lewis’ disappearance.

He also said that on behalf of the Lewis family, he’s filed a lawsuit against Lewis’ second wife Carole Baskin in an attempt to depose her and get her to speak on the record.

In an email sent to the Associated Press on Monday, Baskin said she wouldn’t comment.

Lewis’ case, and Baskin, were featured in "Tiger King." Baskin is still the owner of Big Cat Rescue, and lobbies for abolishing private wildlife ownership.

"Tiger King" was a documentary series about Joseph Maldonado-Passage, also known as “Joe Exotic,” an eccentric former Oklahoma zookeeper who loves big cats.

In retaliation, Maldonado-Passage raised questions about Baskin’s former husband, Jack “Don” Lewis

In March, the Hillsborough County sheriff asked for tips in the case of Lewis and announced a reopening of Lewis’ case