Sicarius Security Books in Order

Sicarius Security takes the paranormal side of Susan Harris's work and gives it a slicker, more dangerous frame. On the surface, Sicarius is an elite security company. In reality, it is also the front for a supernatural enforcement network, one that exists to protect the balance between humans and the Inferna, the hidden species living around them.

That balance is always one bad decision away from collapse.

The figure holding a lot of that weight is Malakai Cavanagh, an ancient vampire, leader of the Irish vampire Kiss, and one of the people at the center of Sicarius itself. He is powerful, politically connected, and used to being the one others turn to when something ugly needs to be handled. The first book pairs him with Keeva Cross, a banshee whose touch can kill and whose life has been shaped by punishment, guilt, and the need to earn back freedom. That mix tells you a lot about the series. These are not easy people living easy lives.

From there the books open outward across the wider Sicarius family. Each installment follows a different couple, but the series is tied together by shared loyalties, workplace connections, and a larger supernatural threat that keeps building in the background. Vampires, werewolves, banshees, harpies, dragons, demons, and prophecies all have a place here, but the books never forget that the emotional center is family, especially the rough-edged, protective kind.

That family feeling matters. Even when the series is busy with action, politics, or looming apocalypse, it keeps returning to relationships and trust. People are guarding secrets, fearing destiny, hiding trauma, or trying to stay loyal to the wrong side for the right reasons. The romance is important, but the group dynamic is what gives the series its staying power.

It is a good fit for readers who like connected paranormal romances with an ongoing plot. You can enjoy the individual couples, but there is also a clear larger arc running through the books, especially once the threat from Vindicta starts to reshape everything.

In simple terms, Sicarius Security is paranormal romance with teeth. It has protective vampires, dangerous missions, loaded family history, and a constant sense that the next fight could be the one that changes the whole world.