dr. edgar cortes treated andrew that day. >> i've never seen a sodium that high, in anyone. if you take salt at a level faster than your body can remove it, your sodium level will go up, and cause brain swelling and convulsions then eventually death. >> reporter: hannah told doctors andrew ate condensed soup with this, zatarain's creole seasoning. after two bowls, he wanted more. but instead, hannah says she offered him a sippy cup like this of water with a few sprinkles of the seasoning. >> and so my thought was that i would calm him down, appease him. give him like what -- like a broth, without giving him a tummy ache from eating more food. >> reporter: but that story didn't add up to the medical staff. one doctor calculated it would take at least 23 teaspoons to get andrew's sodium level that high. and there was something else suspicious, unexplained bruises and scratches on andrew's body, >> the medical staff had obviously been alerted, saw something said, "hey we need the police here." >> reporter: corpus christi police detective, michael hess, got the call that day. as