Gentleman Jack season finale tonight

HBO

Tonight at 8:00 on Hallmark it's a special The Good Witch, ABC has Jimmy Kimmel Live: Game Night and BYUtv has the 1st season finale of Show Offs.  At 8:31 on ABC it's NBA Countdown followed by NBA Finals 5 at 9:00.  

Up at 10:00 on NBC, it's Dateline, HBO has the 1st season finale of Gentleman Jack and on TLC it's the series premiere of Kate Plus Date.