The voicemail came at 6:44 on a Tuesday evening. Robert was sitting at our small oak kitchen table, eating his tomato soup and lining up his saltines in perfect pairs. The little kitchen television was tuned to Wheel of Fortune, that familiar, low-level hum that usually made our house feel safe. I almost let the call go to the machine because the caller ID just said blocked. I figured it was another one of those nonsense telemarketing schemes that target older folks.