On voir dire, when appellant's counsel elicited that McMurry met Mrs. Barrett at the garage sale at the Barretts' residence, he did not ask whether McMurry had also met Officer Barrett there, nor did he inquire about the extent of McMurry's acquaintanceship with Mrs. Barrett, even though Mrs. Barrett was listed as a prospective witness on the State's witness list filed two days earlier. Compare Lamkin v. State, 165 Tex.Crim. R., 301 S.W.2d 922 (1957), cert. denied 355 U.S. 59, 78 S.Ct. 137, 2 L.Ed.2d 107 (1957). Moreover, McMurry's quoted response to appellant's counsel's final question openly acknowledged that McMurry was unsure of what should be brought out and should have put appellant's counsel on notice that further examination might reveal something relevant.