Star Trek: TOS (Diane Duane) Books in Order

The Enterprise tests a radical new drive and ends up tangled in a crisis that puts reality itself under pressure. It is big-idea Star Trek with Kirk and company trying to think their way through disaster.

A Romulan commander is forced into an uneasy alliance with Kirk's Enterprise to stop something dishonorable and catastrophic. It is where Duane's Rihannsu saga begins, and it starts strong.

Part political thriller, part cultural deep dive, this novel opens the Romulan Empire from the inside. Honor, secrecy, and identity matter as much as plot, and that is exactly why it works.

Vulcan may secede from the Federation, and Spock finds himself at the center of the argument. The novel balances a present-day political crisis with the long, difficult history of Vulcan itself.

Kirk leaves McCoy in command of the Enterprise as a joke on regulations, then promptly vanishes on an important mission. McCoy is stuck with the bridge, Spock cannot take over, and Klingons arrive to make everything worse.

Romulan politics keep tightening around questions of honor, legitimacy, and survival. This continuation builds on *Swordhunt* and presses the Rihannsu story further inward, into the Empire's own fractures.

The Rihannsu saga moves deeper into Romulan political danger, where old loyalties and newer ambitions are equally hazardous. Duane shifts the focus from first alliance to the harder work of aftermath and power.