State troopers and Bulloch County sheriff’s deputies caught one of Savannah’s most dangerous criminals Wednesday morning after a high-speed chase through three counties. Edward Demar Singleton, 29, of Bolling Street in Savannah, was driving a stolen Trailblazer when a concerned driver called to report his erratic and reckless driving, said Gena Sullivan, the public information officer with Savannah-Chatham Metropolitan Police. He was wanted by that agency on cocaine charges and by the Chatham County Sheriff’s Office for being an absconded sex offender, she said.