Urashima Book 4 Firestorm

Jimmy Miller puts the Kiku Teahouse under surveillance. He quickly establishes that his main suspect in the Red Rose case, the reclusive Osamu Nagai, is making
multiple trips from the teahouse to two destinations: the Fukuyama Bathhouse, headquarters of Jun Obuchi's Sumidakai, and the offices of a nearby realtor called Fuji Real Estate. Acting on a tip off, Miller and his CID team successfully prevent a potentially disastrous train derailment. When he sees Obuchi fleeing from the scene, Miller's suspicions that Obuchi might actually be working for Nagai intensify.
This is the fourth novel in a series of five. The companion website is at www.urashima-novels.com.