Deliberation and Premeditation

An intimate, clandestine relationship had developed between defendant and decedent, and they often took long automobile trips together. On July 28, 1960, the decedent drove from Chicago with her sister to the home of relatives in Baltimore. The defendant, who had expected to make the trip with the decedent alone, followed in his car the next day. Pursuant to plans made by telephone, defendant met the decedent for breakfast early in the morning of July 30, at a shopping center in Baltimore, but the decedent hurried off saying she would meet defendant later in the day. She returned at approximately 12:30 p.m., parked the station wagon she was driving near defendant's Cadillac, and walked over to his car. The defendant said he was tired and felt miserable and needed a place to stay. When the decedent refused to show him a place where he could rest or direct him to the route to Chicago, a "heated" argument erupted. Defendant said