What secrets do the river hide?

Alan Harris, an old school Oxford Don comfortable in his enclosed academic world, leads an outwardly contented life, until the body of one of his students, Simon, is discovered in the river, his empty punt moored nearby.

The verdict is suicide. But Simon seemed happy and confident. And why does his family show no emotion at the loss of their son?

Meeting Simon's closest friend, Alban, leads only to more questions and Alan starts to suspect there is much more to the tragedy than meets the eye...