Locked in Pursuit (Electra McDonnell Series #4)

Safecracker Ellie McDonnell hasn't seen Major Ramsey-her handsome but aloof handler in the British government-since their tumultuous mission together two months before, but when she hears about a suspicious robbery in London, she feels compelled to contact him. Together they discover that a rash of burglaries in the city all lead back to a hotbed of spies in the neutral city of Lisbon, Portugal, and an unknown object brought to London by a mysterious courier.

As the thieves become more desp...