Chemistry of Magic — Patricia Rice

Diagnosed with consumption, Viscount "Devil" Dare knows his days are numbered. With his greedy cousin scheming to throw Dare's mother and sisters out of their home after his death, he can hardly refuse a mysterious lady's solution -- wedding vows. Her lands would ensure his industrial success -- and secure the future for those he loves. Bookish botanist Emilia McDowell desperately needs the land she will inherit once she marries. Her gift for the healing arts requires growing and experimenting with herbs if she's to save lives. When she learns that her funds would benefit handsome Lord Dare, who is said to be dying, she offers a marriage of convenience. But if Emilia touches Dare, her dangerous healing gift could kill her. As they learn to love under trying circumstances, Emilia longs to find the courage to be a true wife -- until she discovers Dare's plans for her inheritance. Can love and marriage surmount death and betrayal?