Episode 107 of "Without a Trace"
s05e13 Eating Away

The team searches for a competitive eating champion who vanishes after winning a $5,000 prize in a chili eating contest. Barry Rosen disappears after his doctor gives him the sobering news that he'll need to stop eating competitively or he'll die of a heart-attack or stroke, and before hearing the test results that say Barry's post-contest collapse was a result of being poisoned with bleach. As the team begins to question his competitors, they also investigate why Barry attacked his brother with a knife days before the contest. Meanwhile, Danny is conflicted when his friend Carlos, who is Elena's daughter's father, asks Danny to write a letter on his behalf for his upcoming custody hearing with Elena.