Burning Lamp (Dreamlight Trilogy #2)

The Arcane Society was born in turmoil, when the friendship of its two founders evolved into a fierce rivalry. Nicholas Winters’s efforts led to the creation of a device of unknown powers called the Burning Lamp. Each generation, the Winters man who inherits it is destined to develop multiple talents — and the curse of madness.
Plagued by hallucinations and nightmares, the notorious crime lord Griffin Winters is convinced he has been struck with the Winters Curse. But even as he arranges a meeting with the mysterious Adelaide Pyne, he has no idea how closely their fates are bound, for she holds the missing lamp in her possession.
Their dangerous psychical experiment makes them the target of forces both inside and outside the Arcane Society. And though desire strengthens their power, their different lives will keep them apart — if death doesn’t take them together.