Peterson Defense Continues Cross-Examination

Peterson defense continues cross-examination of lead detective

A Modesto police detective is headed back to the stand today to continue cross examination by Scott Peterson's lawyer Mark Geragos. Detective Craig Grogan has spent a week explaining why authorities think Peterson is the only person who could have killed his pregnant wife, Laci. Under cross-examination last week, Grogan acknowledged Peterson has no prior criminal record and had never laid a hand on Laci before she was reported missing Christmas Eve 2002.

Today, Geragos is expected to point out all the evidence police couldn't find. There's no murder weapon, crime scene, cause of death and no direct witnesses. Laci Peterson's remains -- and that of her fetus -- washed up in San Francisco Bay in April 2003. The judge has said prosecutors intend to wrap their case by Thursday, after 18 weeks of trial and more than 160 witnesses.