CHAPTER 1 IT WAS AN ODD-LOOKING vine. Dusky variegated leaves hunkered against a stem that wound in a stranglehold around the smooth trunk of a balsam fir. Sap drooled down the wounded bark, and dry limbs slumped, making it look as if the tree were trying to voice a moan into the cool, damp morning air. Pods stuck out from the vine here and there along its length, almost seeming to look warily a