Cleo North Series by Merline Lovelace

Ten years ago, while investigating a case assigned by the air force's Office of Special Investigations, agent Cleo North made the mistake of ignoring threats that turned deadly for a young sergeant. She vowed never to make the same mistake again. Now Cleo is given the opportunity to uncover what happened a decade ago--and the clues lead to a suspect who is a high-ranking officer. Together with special agent Major Jack Donovan, they uncover the events that led to that first deadly mistake.

When a young woman vanishes without a trace, former special agent Cleo North is hired to find her. But cold trail after cold trail lead to nowhere, until Major Jack Donovan -- special agent with the Air Force's Office of Special Investigations and the on-again, off-again man in Cleo's life -- joins the case. Soon they are trying to determine why a lowly employee had access to engineering schematics of a ship carrying dangerous cargo... moreWhen a young woman vanishes without a trace, former special agent Cleo North is hired to find her. But cold trail after cold trail lead to nowhere, until Major Jack Donovan -- special agent with the Air Force's Office of Special Investigations and the on-again, off-again man in Cleo's life -- joins the case. Soon they are trying to determine why a lowly employee had access to engineering schematics of a ship carrying dangerous cargo. When the evidence leads them to Malta, they uncover a massive threat with international consequences. Absolutely nothing is as it seems -- and time is running out for them to find the key to a terrorist's deeply hidden sins. less

Former special agent Cleo North thought she had sworn off bureaucracy forever -- but the Air Force Office of Special Investigation has other ideas. They need her expertise and are willing to pay her extravagant fee. The case? An off-duty U.S. fighter pilot recently took a bullet under suspicious circumstances and wound up dead... moreFormer special agent Cleo North thought she had sworn off bureaucracy forever -- but the Air Force Office of Special Investigation has other ideas. They need her expertise and are willing to pay her extravagant fee. The case? An off-duty U.S. fighter pilot recently took a bullet under suspicious circumstances and wound up dead. It doesn't take long before Cleo and Major Jack Donovan from the OSI -- along with some help from British Intelligence -- discover the pilot was involved in some questionable activities. But why was he so interested in a U.S. Army Corps C-46 that went down in the English Channel in 1943? When another murder links a far-fetched story of wartime international intrigue to millions of dollars in gold, only one question remains: who is behind the ultimate cover-up? And could Cleo be the next bullet's victim? less