K.S.A. 60-444

This article shall not be construed to (a) exempt a juror from testifying as a witness to conditions or occurrences either within or outside of the jury room having a material bearing on the validity of the verdict or the indictment, except as expressly limited by K.S.A. 60-441 ; (b) exempt a grand juror from testifying to testimony or statements of a person appearing before the grand jury, where such testimony or statements are the subject of lawful inquiry in the action in which the juror is called to testify.