In a confusing four-way tangle of relationships, a Lewisville man and woman have been charged in a murder-for-hire plot. Billie Jo Mitchell and Ariel Garcia have been locked-up on two counts of criminal solicitation of capital murder.  Police say they tried to hire a hitman to murder Mitchell’s husband and his girlfriend.  All four of them lived in the same apartment.  The would-be hitman went to police who gathered evidence through recorded conversations.  Garcia and Mitchell are held on bonds of $100,000 a piece.