🕵️♂️Marine Captain Shirley Russell disappeared without a trace, leaving her colleagues in shock.
🔎The FBI joined the investigation, suspecting foul play in her disappearance.
🔒Russell's exemplary conduct made it hard to believe she would go AWOL.
📞Threatening phone calls and harassment raised concerns about her safety.
🔍Investigation revealed conflicting statements from Russell's husband, raising suspicions.