Cauchy horizons, thermodynamics, and closed timelike curves in planar supersymmetric spaces.

We study geodesically complete, singularity free space-times induced by planar domain walls interpolating between supersymmetric Minkowski (M[sub 4]) and anti--de Sitter (AdS[sub 4]) space-times. A geodesically complete space-time with [without] closed timelike curves includes a finite [infinite] number of semi-infinite M[sub 4] regions, separated by a region of AdS[sub 4]. The spacetimes are nonsingular and exhibit Cauchy horizons with zero Hawking temperature and vanishing entropy.