Physics inconvenient? Change it. Then watch it try to kill you. Solve a murder in a universe without ground to stand on. Investigate inexplicable deaths a few million years after the Big Bang. Take too many breaths and never go home again. Let the antimatter trickle between your fingers, and visit five alien universes in this first Montague Portal omnibus. Contains: Forever Falls Hydrogen Sleets Drinking Heavy Water Sticky Supersaturation No More Lonesome Blue Rings.