Bond is set at 500-thousand dollars for the Gahanna man accused of stabbing and wounding his teen girlfriend's father. 20-year-old Robert Best is accused of stabbing 46-year-old Alan Dillman. Prosecutors say Best and 16-year-old Grace Dillman plotted the stabbing. Prosecutors say Grace Dillman wanted both of her parents dead because they did not approve of the relationship. She is due in court later this month.