Books like The Throne of Caesar by Steven Saylor

Set in ancient Rome, Gordianus the Finder wrestles with a mystery that intertwines the legendary Seven Wonders of the world with the city’s political intrigue.

In 54 BC, Julius Caesar’s campaigns in Gaul threaten the Roman Republic as he pursues ambition to become dictator.

Gordianus the Finder travels to war-torn Egypt seeking a cure for his ailing wife Bethesda, but her sudden disappearance propels him into a perilous quest amid ancient power struggles.

In 88 B.C., Rome, Greece and Egypt teeter on war’s brink. 22‑year‑old Gordianus, a detective in Alexandria, must rescue his kidnapped slave Bethesda and navigate political intrigue before a looting raid threatens the city.

Gordianus the young detective must unravel a cryptic warning from his former tutor Antipater, who is in danger while traveling with Mithridates. Faced with deadly conspiracies in Ephesus, Gordianus plots a daring rescue behind enemy lines.

"In 90 A.D., following the Saturninus revolt in Germany, the Emperor Domitian has become more paranoid about traitors and dissenters around him. This leads to several senators and even provincial governors facing charges and being executed for supposed crimes of conspiracy and insulting the emperor. Wanting to root out all the supports of Saturninus from the Senate, one of Domitian's men offers to hire Flavia Alba to do some intelligence work. Flavia Alba, daughter and chip off the old block of Marcus Didius Falco, would rather avoid any and all court intrigue, thank you very much. But she's in a bit of a bind. Her wedding is fast approaching, her fiancé's still recovering--slowly--from being hit by a lightning bolt, and she's the sole support of their household. So with more than a few reservations, she agrees to "investigate." Adding to the confusion is yet another Nero pretender has shown up in Parthia and is trying to rally support for his claim for the throne. With intrigue upon intrigue swirling around the capital city, it's up to Albia to uncover what is--and isn't--the real threat"--

"In the first century A.D., during Domitian's reign, Flavia Albia is ready for a short break from her family. So, in July, she returns to Rome, leaving them at their place on the coast. Albia, the daughter of Marcus Didius Falco, now retired as private informer, has taken up her father's former profession and it's time to get back to work. The first order business, however, is the corpse found in a chest sent as part of a large lot to be sold by the Falco family auction house. As the senior family representative in Rome, it falls upon Albia to find out who, why, and by whom. At the same time, her potential young man, Faustus, comes looking for help with his friend Sextus's political campaign. Between the auction business and Roman politics, it's not quite clear which one is the more under-handed and duplicitous. Both, however, are tied together by the mysterious body in the chest, and if Albia isn't able to solve that mystery, it won't be the only body to drop"--

The Triumph of Caesar follows the political aftermath of Julius Caesar’s victory, detailing Roman leadership, key figures like Vercingetorix, Cleopatra, and the involvement of Gordianus the Finder.

In Roman Britain : the medicus Ruso and his wife Tilla are back in the borderlands of Britannia, this time helping to tend to the builders of Hadrian's Great Wall. Having been forced to move off their land, the Britons are distinctly on edge and are still smarting from the failure of a recent rebellion that claimed many lives. When Ruso's recently arrived clerk, Candidus, goes missing, tensions increase. Then a local boy also vanishes, and Ruso and Tilla discover an intricate scheme involving slavery, changed identities, and fur trappers.