it was a tough thing to deal with. >> the cash register showed wanda mason had been killed for $351. strangely, wanda told family members just days earlier that she was not afraid to work the night shift because she had a plan in case she was robbed. >> she said that if somebody tried to rob her, that she'd help them carry it to the car. it wasn't her money and it wasn't worth her dying over. it was no concern of hers. that's the business's problem, not hers. >> police questioned everyone in the neighborhood and searched the store for clues. >> we had officers set up a perimeter and we got a canine track going. a couple blocks away, officers spotted a guy running down the road with a paper bag in his hand coming from the direction of the store. so they detained him and brought him back to the office so that we could talk to him. we were hoping that we had already got our guy. >> the suspect, a 20-year-old african-american, was brought in for questioning. was the security camera video clear enough to identify whether the suspect was the killer? when the flu hits, it's a really big deal

. >>> wanda mason was a 48-year-old single mother of three.ad worked in various cities across the country, trying with mixed success, to build a stable life for her family.