The Holy Land

A brotherhood of men who have had their tongues cut out guard the secret
of the Shroud of Turin down through the centuries, the historical story
alternates with a modern day mystery about the shroud.

As the burning city of Acre falls from the hands of the West in 1291, a
young Templar knight, his mentor, and a handful of others escape
carrying a mysterious chest entrusted to them by the Order's dying Grand
Master. Available as audiobook.

Second in his trilogy about the Knights Templar.

An often irritatingly written effusive history of the Crusades narrated by a crusader.

A Frankish woman goes to the Holy Land to find her crusader brother in the early 1100's.  Strong female character only one of this novel's plusses.  A non-supernatural forbear to Tarr's later novel about King John.  NH

A rich, teeming chronicle set in 12th century Cairo, Damascus, and
Jerusalem

A special horse named Hosanna changes the lives of two English brothers
and those around them as they fight with King Richard I against
Saladin's armies during the Third Crusades. 

In 12th century England a young man becomes the squire and lover of a
Saxon knight and accompanies him on Crusade to the Holy Land.

The bastard son of a Frankish knight goes on crusade.  See Movies.

Novel of the Fourth Crusade.

Book 1 of the Templar Trilogy.

Book 2 of the Templar Trilogy.

After his master, a maker of coins for the king, is brutally punished
for alleged cheating, seventeen-year-old Edmund finds himself traveling
to the Holy Land as squire to a knight on his way to join Richard the
Lionheart.

While travelling with his wife and child, Theophilos recounts a story from the Third Crusade, involving a dwarf jester,
Crusaders, Assassins, and the beautiful queen around which they all revolve.