Vital Signs (Dr. Marissa Blumenthal #2) by Robin Cook

Where life begins, terror lurks.
   Marissa Blumenthal seems to have it all -- a superb professional reputation, a flourishing pediatrics practice, a perfect marriage. But she lacks the child she so desperately desires. When tests confirm her infertility she barely notices her marriage and career crumbling under the strain of her obsession with becoming pregnant.
   At counselling she meets Wendy, an old friend who has the same medical disorder. After comparing notes the two decide to undertake a little medical sleuthing, using their qualifications and contacts -- and meet brick walls at the fertility clinic where the trail begins.
   The pair enter a thrilling exploration of the brave new world of reproductive technologies that takes them from Brisbane and Australia's lethal Barrier Reef to the shady underside of Hong Kong.
Undeterred by personal danger, Marissa allows herself to be drawn into the dark vortex of the baby-making business, where a woman's dream can turn, agonisingly, to dread . . . 
   Vital Signs shows the master of the gripping medical thriller on top of his form, with a chilling exploration of the passion to create life -- and the power to destroy it. 

Genres: Thriller - Mystery - Medical - Suspense - Horror - Mystery Thriller - Crime - American Author