Bightmares

(Book 2 in the Deep Space Mission Corps series.)
[Menage Erotic Sci-Fi Menage a Quatre Romance, M/M/M/F, with M/M, reverse harem]
Dr. Emilia Hypatia is settling into life in space with her three husbands on board the DSMC exploration vessel Tamora Bight. Spending five years with Aaron, Caph, and Ford will be no sacrifice. Despite a shared tragedy in the men's past that nearly took Aaron's life and left emotional scars that still haunt him to this day, Emi's love has gone a long way toward healing and completing their lives.
A space colony distress signal calls the Tamora Bight on its first mission, and Emi is forced into a race against time. Not only to save the colonists from the mysterious disease ravaging their men, but also to save her men from an old vengeance born of their grief-filled past.
When Aaron is stricken with the illness, the stakes multiply. Will she find a cure for the "rage" in time, or will all their dreams turn into inescapable nightmares?
** A Siren Erotic Romance
The correct reading order for the series is as