This paper discusses the second volume of Pullman's trilogy in which the quests of the two children to establish the nature of their link to parental objects intersect across time and space. They enter an imaginary world on their journey, and we observe their relationship develop into one of friendship and psychological interdependence. There is a shift from dominant persecutory anxieties towards depressive concern, alongside an increasing capacity to differentiate between hubris and courage, and to depend on the protection and love of surrogate parental figures.