Liars Books in Order

A mysterious plane crash interrupts Jarli’s attempts to avoid the criminal Viper. When his Truth App uncovers a secret at the wreckage, he is forced to investigate alongside a school tormentor whose own past complicates their escape.

Jarli creates an app that detects lies, expecting it to make honesty easier. After it goes viral and exposes secrets across his town, angry classmates, adults, and a criminal network make its teenage inventor a target.

Jarli loses a day of memory that may hold the key to Viper’s identity and plan to destroy Kelton. Meanwhile, a captive friend plots escape as their group struggles to distinguish allies from the criminal’s hidden spies.

Mercenaries seize a hospital and hunt an injured man sheltering with barricaded students. Trapped among them, Jarli cannot summon help and must work with his friends to outwit the criminal Viper’s forces before they break through.

Government agents recruit Jarli to demonstrate his lie-detecting app at a conference, but an attack makes him the chief suspect. With the app hacked and police pursuing him, he must expose the scheme behind the accusation.