More than six months have passed since Sydney Land and Nehemiah Kauffman were fatally gunned down at an apartment near Hualapai and Peace ways.
"There is a great probability that they've killed before," said Sydney's mom Connie Land, "they could kill again."
Land has been working tirelessly to search for leads. She has stayed in close touch with detectives.
"I thought that time would heal," she said, "it doesn't make the pain go away."
Police have not named a suspect in the murder, but previously stated they were seeking two men.
Land is contacting anyone who may be able to help.
"I've tried to contact Discovery ID," she said, "I've called private investigators."
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She believes that some of the young people who knew the victims likely have information.
"Ages 15 to 25, kids that play sports, basketball football," she said.
If you have any information on the homicides, you can call in an anonymous tip to CrimeStoppers at 702-385-5555.