India Summers is a librarian and a talented historian, so when a stranger asks her opinion on an ancient coin she is happy to oblige, but when the same man is murdered less than an hour later, it soon becomes apparent that there is far more to the situation than meets the eye. Recognising her unique talents for historical reference, she is quickly recruited by Brandon Walker, a security service intelligence officer investigating the strange disappearance of a very special young girl.

The Holy Land is in turmoil and desperately awaits the arrival of Edward Longshanks and his relieving army of French and English Crusaders. This is a time of brutality, an age of chivalry. A time of strong men with stronger hearts, an era with no place for the weak. Yet a thousand miles away, a 14-year-old boy learns a disturbing secret that drives him on a Crusade of his own. A quest to avenge his family, save his brother, and in the process recover the holiest relic in the history of Christendom.

When ex-MI5 operative Joe Mason is sent to Rome to guard an elderly professor and his daughter, he thinks he’s in for an easy ride. But on their first day in the Vatican secret archives, a masked assassin gains entry, shoots Joe’s client in cold blood and steals an ancient manuscript. Giving chase, Joe can’t imagine what could lie within those pages that would make someone willing to kill. The search for answers leads Joe and his comrades in a race against time, across continents and into treacherous mountains.

England, 1351. The Pestilence has ravaged the land. Villages lie abandoned but for crows and corpses. Highways are patrolled by marauders and murderers. In these dark and dangerous times, the wise keep to themselves. But Gerard Fox cannot afford to be wise. The young knight has been robbed of his ancestral home, his family name tarnished. To regain his lands and reputation, he sets forth to petition the one man who can restore them. Fate places Fox on the wrong road at the wrong time as he hurtles towards a chance encounter. 

25 BC. Titus Cervianus is no ordinary soldier. A former surgeon from the city of Ancyra, he's now a capsarius—a combat medic. Cervianus is a pragmatist, a scientist and truly unpopular with his legion. The Twenty Second Deiotariana have been sent to deal with uprisings and chaos in Egypt. Yet the Twenty Second is no ordinary legion either. Founded as the private royal army of one of Rome's most devoted allies, the king of Galatia, their ways are not the same as the other legions, a factor that sets them apart and causes friction with their fellow soldiers.