The trial of Dr. MartinMacNeil, a Utah doctor accused of killing his wife is heating up as his mistress testifies.   Criminal defense attorney Brian Silber of Fort Lauderdale joins us in our South Florida remote liveshot tv studio in Fort Lauderdale on FOX News Show “Happening Now” The doctor is accused of drugging his wife and helping her into a bathtub where she later drowned. Last Friday, the doctor’s mistress, Gypsy Willis, testified that their relationship was both sexual and casual in nature. Also, two of MacNeil’s older daughters testified in court that they believed their father was guilty. Testimony in the trial is set to resume tomorrow.