"[Takes] you on a slow descent into madness." --SF Signal

"Begins strange and gets quite a bit stranger." --Innsmouth Free Press

"Rumbullion has moments of hilarity, ridiculousness, and mystery aplenty." --The Arkham Digest

A dinner turned awkward. A card game gone amiss. An old friendship destroyed. An engagement dissolved. A man murdered--maybe even two.

In the wake of a fateful and fatal party, young, sickly aristocrat Julian Bretwynde decides to interrogate all who were in attendance, including the infamous alchemist, immortal, and liar, the Count of Saint Germain. What Julian will uncover about that night, no one could ever have expected, least of all himself. And even worse, he'll be forced to decide what's true among the radically disparate accounts of men and women who stood side by side, watching the same events unfold. As he gets deeper and deeper into his investigation, the killer's identity grows ever more obscure... as does that of the victim.