Both men's fathers were in the military when the couples sought fertility treatments at the Aventine Clinic in Philadelphia, Pennsylvania. Jeannie and Lisa visit Pinker he is identical to Steve, but had no twin at birth and was born two weeks after Steve, in a different state. Soon after, Steve is arrested for Lisa's rape and Lisa picks him out of a lineup, but Jeannie believes his claims of innocence. Berry disrupts Jeannie's research by alerting the press to the legitimate ethical issues of her software. He contacts his two partners in Genetico, Inc., a medical research company that heavily funds JFU Jones, Preston Barck, and United States Senator Jim Proust are racist and classist, and apparently believe that the involvement of Steve and Pinker in the study will jeopardize Genetico's $180 million sale to international conglomerate Landsmann, and with it Proust's presidential campaign. Berrington 'Berry' Jones, a prominent researcher at JFU, is shocked to see Steve.

This seems to confirm Steve's fears that he is unable to control his own violent impulses. Jeannie's software finds links in medical data and has identified him as the twin of incarcerated murderer Dennis Pinker. Jeannie meets law student Steven Logan, who participates in her study, prompting mutual attraction. Michelle Delaware to create a facial composite of the suspect. The police determine that the perpetrator was a serial rapist who simulated a fire. Jeannie's friend Lisa Hoxton is raped during the evacuation of an on-campus locker room. Financially strained, she sends her Alzheimer's-afflicted mother to live in a sub-par nursing home. Her interest in criminal tendencies is influenced by the fact that her father, Pete, is an incarcerated burglar. Jeannie Ferrami, genetics (rather than upbringing) on personality.

The Third Twin by Ken Follett