Before Sartory died, police say, he gave Blanc his computer passwords and a power of attorney granting control over his bank and brokerage accounts. He also appeared to revise his will to leave Blanc the bulk of his fortune, although police believe the document is forged.
Blanc withdrew $210,000 from Sartory's account, the maximum available, before her arrest and was due to get $1.3 million more the day Cox sent his subpoena and Fidelity stopped the transfer.
Cox also checked at the Chevrolet dealership where the SUV had been towed after the accident. A salesman said Blanc had erupted in fury when she learned that someone already had bought a new, top-of-the-line Corvette ZR1 that she wanted. The car cost more than $100,000.
"She became very irritated, very angry," Cox said. "She told them she was about to get $7.5 million in cash."
When police searched her home, he said, they found a book with a title like "How to Choose Your Prey" in her safe.