HOUSE OF DOORS - FIRST. NY: Tor, 1990. First Edition. 4 1/4 x 6 3/4. Paperback. Fine / Fine. ISBN: 0812508327. Trapped inside the House of Doors, a group of scientists and spies soon determine that the menaces they battle are formed from their own subconscious fears...those terrible horrors which are impossible to control or eradicate. One door conceals the way to safety - but all may die before they find it.