A woman was found dead in her apartment. She was hanging from the ceiling but the detectives deduced that it was not suicide because of the bruises on her body (indicating a struggle) and the mess in her apartment.
The police had the perfect suspect, an ex-boyfriend. The woman's friends knew that her boyfriend was upset and especially angry about the break-up. It is also known that the boyfriend threatened the woman many times and said that he would kill her if she did not come back to him. Despite all of this, her friends stated that the victim was still in love with the man and she told them she would go back to him if he changed.
Yes, the suspect was perfect, but so was his alibi. It takes 2 hours for him to get to the victim's apartment from his workplace. He got out of work at 8PM (as the cameras at his workplace show) and the victim's estimated time of death is around 8:30 PM.
Detectives investigated his entire house for a clue but found nothing of importance.
In the end though, one of the detectives noticed that the victim was missing her phone and this was enough for him to crack the case. The boyfriend was arrested and charged with first degree murder.
How was the woman murdered? How was it possible for the ex-boyfriend to make it in time?
What are phones mainly used for?
What would the police do if they had found the victim's phone?