  We analysed the optical and infrared properties of X-ray sources in the Great
Observatories Origins Deep Survey (GOODS), a deep multiwavelength survey
covering 0.1 square degrees in two fields. The HST ACS data are well explained
by a unified AGN scheme that postulates roughly 3 times as many obscured as
unobscured AGN, as are the spectroscopic and photometric redshift distributions
once selection effects are considered. Our model predicts infrared number
counts of AGN that agree well with the preliminary Spitzer data, confirming
that large numbers of obscured AGN are present in the early Universe (z>1).
