The Last Spymaster by Gayle Lynds
Charles Jay Tice was a spy's spy - a legendary figure in the CIA, I and the intelligence world in general, towards the end of the Cold War. But he was also a traitor, having sold secrets that seriously compromised the U.S. for years to come. Since his conviction, he's been kept in the tightest maximum security prison under the tightest security. Until one morning, his cell is discovered empty - Tice has disappeared without even the hint of trace. Agent Elaine Cunningham is a 'hunter,' assigned to find Tice quickly, before the rest of the world knows he's gone. But she soon finds out that something is very wrong. This is more than just an impossible escape by a master spy, lurking in the shadows is a much bigger, deeper, and more dangerous conspiracy than an old spy's last run for freedom.