Corto Maltese: The Guilded House of Samarkand.

Hugo Pratt's famous comics adventurer, Corto Maltese while sojourning in Adana, Turkey, discovers a map to the treasure of Cyrus, an ancient king of Persia. To assist him in his quest, he enlists his old friend/nemesis the unbelievable Raspoutine whom he first has to help escape from the prison of Samarkand (aka "La maison dorée de Samarkand", the golden house of Samarkand). On the long and tortured way to the riches, he encounters all kind of interesting characters, soldiers of fortune, lost British actors, and even his doppelgänger.