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Tommy struggles to do the right thing after a fire in an abandoned mill kills a firefighter and several Latino squatters.
Declan brings in a second investigator to help him work a promising new lead.
Colin's torch for Michael's girlfriend, Kath Parry, begins affecting his work.
Moe's hot temper gets him in trouble and only Freddie can protect him.
Click to hear 'Will the Circle be Unbroken' by The Staples Singers