The Morpheus Factor — Ashley McConnell

DEADLY DREAMS
On the world classified by the Stargate Project as P4V-837, the SG-1 team encounters an environment hospitable to humans, and the Kayeechi, a race of seemingly friendly natives. But after a few hours spent with their hosts, the team find themselves hallucinating--each member seeing a completely different landscape than the others--both while dreaming and awake.

The longer the team remains guests of the Kayeech' the darker their dreams become. SG-1 have become unwilling participants in a brutal conflict--and their subconscious minds have become the most deadly weapon of all....