周人瑞(ruì )是山西五台县人,在陕西韩(hán )城县经商。其妻(qī )在生下一对(duì )孪生儿子后死(sǐ )去。周人瑞无力抚养,便请邻(lín )居王妈妈将次(cì )子卖给李三(sān )娘为嗣,取名李(lǐ )遇春。留下长子托王妈妈乳(rǔ )育,取名周天佑(yòu )。周人瑞因生(shēng )意倒闭,携天佑(yòu )回乡。周人瑞(ruì )的弟弟周人祥(xiáng )夫妇为独霸家(jiā )产,不认天佑(yòu )是周人瑞的亲(qīn )子(zǐ ),涉讼公堂(táng )。县令晋信书偏(piān )是一个死啃书本的腐儒,见(jiàn )汝南先贤传有(yǒu )“陈业滴血认(rèn )亲”的记载,便用(yòng )此法断案。见周人瑞父子滴(dī )血入水不融,即(jí )错断其并非(fēi )骨肉,勒令押解(jiě )天佑出境自行归宗。遇春在(zài )李三娘的抚养(yǎng )下长大成人(rén ),与李三娘亲生(shēng )女儿晚春姐(jiě )弟相称,感情甚(shèn )为融洽。李三娘有意要遇春(chūn )继承门户,与王(wáng )妈妈商定,假(jiǎ )称女儿晚春是(shì )自己的养女,欲与遇春婚配(pèi ),但尚未成婚,李(lǐ )三娘病逝。土(tǔ )豪阮自用垂涎(xián )晚春已久,捏造庚帖,借吊唁(yàn )之机,前来诈婚(hūn ),挑起讼端。晋(jìn )信书来审此案(àn )。晋信书仍用滴血认亲之法(fǎ ),见二人血液融(róng )合,误断二人(rén )乃一母同胞不(bú )能成婚,将晚(wǎn )春判与...