NOVA investigates an all-consuming passion that for some people is more precious than life itself.

For nine months in 2000, Tom Hart Dyke was a captive of guerrillas who seized him while he was collecting wild orchids in the Colombian rainforest. Now Hart Dyke is at it again in the most orchid-rich and politically unstable part of Papua New Guinea. NOVA investigates an all-consuming passion that for some people is more precious than life itself.