In this routine medical thriller from bestseller Palmer (The First Patient), Dr. Thea Sperelakis, an idealist who's been working for Doctors Without Borders in the Congo, rushes back to Boston after learning her physician father, Petros, an intimidating figure known as the Lion, is close to death, the victim of a hit-and-run. Thea faces one challenge after another, including having to resuscitate Petros when his heart stops beating. Her brilliant if socially challenged older brother, Dimitri, adds to her anxiety with his computer reconstruction of the accident, which indicates the driver struck Petros deliberately. When Thea manages to communicate haltingly with her father, she suspects he's stumbled on some medical fraud that's made him the target of those behind the fraud. Aided by the requisite hunky ex-cop turned hospital security guard, Thea doggedly seeks out the truth. Robin Cook fans have seen all this before and in more engaging form.