For a long time, police had absolutely no leads on the case, but eventually fingerprints were discovered on a refrigerator door handle. The perpetrator had taken a can of soda after his crime and carelessly left his fingerprints behind.
這個案子警方一直苦無證據可以突破，後來警方在冰箱的手把上找到一枚指紋，原來是嫌犯作案後，在冰箱拿出一瓶易開罐汽水來喝，不經意留下來的。