Castaways

Mix Survivor with Lost and you might get Castaways. This new reality series scatters 12 strangers across a string of uninhabited South Pacific islands, each contestant alone except for random supplies like those that might have washed ashore in a shipwreck. As we watch how each castaway copes, we also see footage revealing the myriad challenges they were facing in their everyday lives. Tuesday, Aug. 7, at 10 p.m., ABC