A young mother is brutally murdered but despite unique evidence at the scene, it takes years to put the pieces together and bring her killer to justice.
Three members of a wealthy family are gunned down in their own home; with little evidence to go on, investigators embark on a multi-year surveillance operation to see if they can prove their instincts are correct.
A single mother is found dead in a hotel stairwell and detectives quickly uncover that she had a secret life that may have led to her demise.