Toxic chemicals and instant chemistry in this tale of murder, medicine and combustible attraction!

One minute Hannah Baker is a quiet science professor. The next, a possible murder suspect. Six victims, one per week, all poisoned with the same exotic chemical Hannah once worked with. Now she's wanted by Houston detective Owen Randall—but is it to enlist her help, or arrest her? Owen knows the prim Hannah is hiding something, but he isn't sure she's a killer. Especially after some unfortunate incidents. Is she the next victim of the chemical killer? Torn between duty and his growing feelings, Owen only knows he has less than a week to save her.