垂拱四年狄仁杰任江南(nan)巡(xun)撫使在一次(ci)(ci)前往下(xia)轄的臨(lin)安縣(xian)視察過程中遇到了(le)(le)(le)一起(qi)亂(luan)案老漢孟(meng)云德狀告其(qi)姑爺李(li)(li)大(da)有(you)(you)(you)殺害自(zi)己的女兒孟(meng)香(xiang)蓮(lian)(lian)和(he)兒子孟(meng)楊而李(li)(li)大(da)有(you)(you)(you)則(ze)反告自(zi)己的岳(yue)父將孟(meng)香(xiang)蓮(lian)(lian)藏起(qi)來意欲(yu)再嫁(jia)他(ta)人(ren)原來孟(meng)香(xiang)蓮(lian)(lian)和(he)李(li)(li)大(da)有(you)(you)(you)在一次(ci)(ci)爭吵中一氣之下(xia)回(hui)了(le)(le)(le)娘家(jia)(jia)(jia)而在孟(meng)香(xiang)蓮(lian)(lian)回(hui)娘家(jia)(jia)(jia)之后李(li)(li)大(da)有(you)(you)(you)母(mu)親一氣之下(xia)便(bian)生(sheng)了(le)(le)(le)病沒辦法李(li)(li)大(da)有(you)(you)(you)只(zhi)能將孟(meng)香(xiang)蓮(lian)(lian)請回(hui)照看李(li)(li)大(da)有(you)(you)(you)來到孟(meng)香(xiang)蓮(lian)(lian)家(jia)(jia)(jia)百般勸說孟(meng)香(xiang)蓮(lian)(lian)答應(ying)回(hui)去(qu)但(dan)天色(se)已晚只(zhi)能等到第二日由(you)弟弟孟(meng)楊送回(hui)李(li)(li)大(da)有(you)(you)(you)由(you)于擔心(xin)母(mu)親當(dang)夜便(bian)趕了(le)(le)(le)回(hui)去(qu)然而過了(le)(le)(le)幾日也沒見孟(meng)香(xiang)蓮(lian)(lian)回(hui)來李(li)(li)大(da)有(you)(you)(you)再去(qu)要(yao)人(ren)卻(que)被岳(yue)父告知兩人(ren)早就出發兩個大(da)活人(ren)憑(ping)空(kong)消失李(li)(li)大(da)有(you)(you)(you)便(bian)懷(huai)疑岳(yue)父將自(zi)己妻子藏匿起(qi)來想(xiang)要(yao)另嫁(jia)他(ta)人(ren)孟(meng)云德也懷(huai)疑李(li)(li)大(da)有(you)(you)(you)殺害自(zi)己妻子和(he)兒子臨(lin)安縣(xian)令周從善不知如何(he)是(shi)好只(zhi)能求助狄仁杰