Scott Peterson's lawyers will make their closing arguments today at Peterson's murder trial in California. Yesterday, prosecutors said Peterson strangled or smothered his pregnant wife Laci not only to be with his lover, but to rid himself of an unwanted child so he could pursue life as a freewheeling bachelor. The defense says someone else abducted and killed Laci Peterson. After the defense finishes, the prosecution gets a chance for rebuttal. The judge has told jurors they can expect to begin deliberations sometime tomorrow. The Peterson trial is in its 23rd week after testimony from 184 witnesses.