Blood work
... Buddy Lockridge- Terry’s (boat) neighbor, terry’s driver, helper, always is curious about McCaleb’s work. Crimmons- the serial killer, villan like, wants to frame McCaleb, kills people with the rare blood type, evil, bad. ... Detective Jaye Winston- McCaleb’s long time friend, helpful, friendly, detective for the sheriff department( in the same line of work as McCaleb) Mrs. ... One cause and effect relationship in the book was in the very beginning when Graciella Rivers comes to Terry McCalebs boat and asks him if he could work on an investigation for her but he refuses because he had just had a heart transplant sixty days prior. ... McCaleb then goes to an officer that he used to work with named Detective Ronaldo Arrongo and asks him to see the surveillance tapes from the liquor store she was killed at. ... Cordell’s husbands car, he saw a sticker that said “I gave blood today” which meant he was a blood donor. When he got home Graciella came and gave McCaleb a list of her sisters weekly routine and he told him that one of her routines was to give blood and she kept going on with things when suddenly McCaleb had a flashback of when he saw Mr. ... He told Graciella and the went to McCalebs doctor and asked if they could have a list for blood donors. ... They both had very rare blood types when again McCaleb knew that’s how they were connected in the murders, making this a Cause and Effect relationship.