cops calling douglas stewart their only person of interest.hing to do with his wife's disappearance. >> she's the best mommy in the world. and i know she would never leave on her own. >> well, they may have had cross-claims and both seeking custody, but she got the custody. that says a lot to me. to john mcneill, news director, wkzo news radio joining us. kalamazoo, michigan. it's almost more than i can take in. about 7:00 a.m. in the morning mommy goes to the mailbox in her pajamas. she's never seen alive again. what more do we know tonight, john mcneill? >> we've learned from a filing for a search warrant for douglas stewart's pickup that they may have a lot more evidence than they've talked about previous to this. we're hearing about the discovery of a clear plastic packaging in the driveway that may have been used to cover a tarp. we're learning that they have the tire tracks taken from a field nearby, an eyewitness account of a pickup in a field nearby, with a white male crouching behind it about the time of the disappearance. we're heari

michigan state police crime lab to virginia to search two vehicles registered to estranged husband douglas stewart. law enforcement desperately searching for mom of two, 32-year-old venus stewart. venus disappears heading down the driveway to drop a letter in the mailbox, wearing just slippers and pajamas. cops say there are signs of a struggle. but what happened? >> you observed heel marks where you believe your daughter kicked in to the propane tank as she was struggling to be set free? >> yes, it is. that's the tank with the footprints on it. it was after it was dusted by the state police. they showed right up. they were dusting for fingerprints, i believe. >> michigan state police investigators say her husband, doug stewart, is considered a person of interest, but so far maintains he is in virginia at the time of her disappearance. >> discovery of plastic packaging in the driveway that may have been used to cover a tarp. >> she was scared to death of her husband. >> tire tracks taken from a field nearby, an eyewitness account of a pickup in a field nearby, with a white male crouching behind it