在这部幽情密使剧情/爱情片中,12岁的Leo应同学Marcus的邀请到他的家乡渡假。乡间的田原风光风景如画，Leo感到非常新鲜。他惊讶的是，Marcus的姐姐Marian貌美热情，她常带他去市场购物。Marcus出麻疹，不能陪Leo玩，Leo只好独自玩。他无意中来到黑色农场，农夫Ted让他带一封信给玛丽安，Leo非常高兴。他每给Marian送—次信，就能得到她感激的微笑。Leo很愉快充当送信的人。Leo与退伍兵Hugh Trimingham交上了朋友，Hugh常讲故事给听他。Leo发现Marian和Ted的信件是情书，并得知Maudsley夫人要把女儿嫁给 Hugh时，就拒绝当送信的使者了。许多年过去了，Leo又来到Marcus家，Marian孀居在家，她还是那样漂亮热情。她再次要求Leo做送信人，给她的孙子送信。
Summer 1900: Queen Victoria's last and the summer Leo turns 13. He's the guest of Marcus, a wealthy classmate, at a grand home in rural Norfolk. Leo is befriended by Marian, Marcus's twenty-something sister, a beauty about to be engaged to Hugh, a viscount and good fellow. Marian buys Leo a forest-green suit, takes him on walks, and asks him to carry messages to and from their neighbor, Ted Burgess, a bit of a rake. Leo is soon dissembling, realizes he's betraying Hugh, but continues as the go-between nonetheless, asking adults naive questions about the attractions of men and women. Can an affair between neighbors stay secret for long? And how does innocence end?
The Go-Between: 信使的觉醒。导演说。同类影片典范。滚在龙葵上的孩子。《幽情密使（The Go-Between）》：跨阶级爱情【第24届戛纳电影节金棕榈奖】。成人世界的闯入者。
