The Dark Arts of Blood — Freda Warrington

In 1920s Switzerland, vampire lovers Charlotte and Karl are drawn into turmoil as Godric Reiniger, a local filmmaker and activist with sinister ambitions, begins his rise to power.
Meanwhile, fiery dancer Emil achieves his dream to partner the legendary ballerina and vampire Violette Lenoir â€" until his forbidden desire for her becomes an obsession. Rejected, spiralling towards madness, he seeks solace with a mysterious beauty, Fadiya. But she too is a vampire, with a hidden agenda.
When Karl and Charlotte undertake the perilous journey to rescue Emil, they unearth secrets that threaten the very existence of vampire-kind.