The writers are running out of plausible explanations for how and why a forensic pathologist is involved in investigations far beyond her expertise. We've seen her personally known to suspects, she been a confidant of principal characters at the crime scene, she's been serendipitously involved with an associated case.
Too often the plot turns on a telephone tip like, "Meet me here, I can't talk over the phone," which places her at a crime scene. "I can't tell you this, I must show it to you." And then there are the scenes where proper police protocol suggests one action but - oh, no - Dr. Sam Ryan can't do that. She's got to de escalate the tension without backup, or put herself in danger because she "knows" in her heart this character wouldn't do anything unpredictable.
It's just stretching the limits of believability.
Too often the plot turns on a telephone tip like, "Meet me here, I can't talk over the phone," which places her at a crime scene. "I can't tell you this, I must show it to you." And then there are the scenes where proper police protocol suggests one action but - oh, no - Dr. Sam Ryan can't do that. She's got to de escalate the tension without backup, or put herself in danger because she "knows" in her heart this character wouldn't do anything unpredictable.
It's just stretching the limits of believability.