"It's clear to me that Chang and Janus want to find a cure. That rules them out for me. We know preventing a cure is priority number one for the Immari. There's only one person on this boat who was a loyal Immari soldier when this all began. Kamau."
"Maybe not while he was alive, but what... what if Chang had already killed Martin? You said he gave him a therapy on the plague barge. What if that therapy killed him, and Chang broke his neck after the fact to hide it?"