Full Series Series 4
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Episode 1
When a headless body is found on a scrap heap the team identify the victim: Matthew Walsh.
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Episode 2
Cassie and Sunny identify four suspects who trained as police probationers together.
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Episode 3
Cassie and Sunny interview each of the four suspects, who all deny knowing the victim.
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Episode 4
Cassie and Sunny discover Walsh was chased by all four suspects on the night in question.
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Episode 5
Cassie and Sunny interview two of the suspects again and get closer to the truth.
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Episode 6
Despite a tragic turn of events, Sunny and the team narrow down the suspects.