Loux, M. J. Introduction.--Hintikka, J. The modes of modality.--Chisholm, R. M. Identity through possible worlds.--Kaplan, D. Transworld heir lines.--Lewis, D. Counterpart theory and quantified modal logic.--Cresswell, M. J. The world is everything that is the case.--Plantinga. A Transworld identity or worldbound individuals? Rescher, N. The ontology of the possible.--Lewis, D. Possible worlds.--Adams, R. M. Theories of actuality.--Kaplan, D. How to Russell a frege-church.--Stalnaker, R. C. Possible worlds.--Mondadori, F. and Morton, A. Modal realism.--Plantinga, A. Actualism and possible worlds.--Lycan, W. The trouble with possible worlds.