When the interstellar wildlife sanctuary Casaverde is quarantined due to an mysterious outbreak of malaria, Andrew Salazar must turn to military surplus synthetic life-forms to help him in his work as warden.

But Andrew soon discovers that the synthetics are far more complex creatures than he first imagined and that something more deadly than an old-world disease is stalking Casaverde.

“an example of how a man and robot…falling in love can be done really well.”—Sirius, Dear Author