Archimedes and the Roman

Dan Holliday answers a young boy's letter about strange happenings at an astronomical observatory, only to find himself trapped in a hostage situation where criminals have taken over the facility to hide from the law. Using quick thinking and a coded message about Halley's Comet, Holliday signals for help while keeping the hostages safe from increasingly desperate captors. The ancient wisdom of Archimedes meets modern danger as Holliday outsmarts the gunmen with science and nerve before the situation turns fatal.