In Colombia, Mark talks Pam into staying to see the mine. J.R. and Matt plot to keep Pam away from Ewing Oil. Jack has more fun with Grace. J.R. invites Sue Ellen to go to Martinique with him. J.R. tells Harry McSween to find dirt on Jerry Kenderson. J.R. comes across a serious obstacle in his investigation of Dimitri Marinos. Cliff gets discouraged at the mine site. Jamie goes back to work. Angelica, Grace, and Nicholas discuss details of the conference in Martinique. J.R. is jealous of Sue Ellen's relationship with Jerry Kenderson. Jenna wants everybody to think she's fine but cracks under Donna's pressure. Matt gets ready to talk to Pam about J.R.