Steve McGarrett and Danny Williams have each other's backs, but their constant bickering has landed them in the doghouse on Hawaii Five-0.

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Season 5's premiere saw the partner's enter couples therapy for the first time, and the pair will continue to need mediation as season 6 opens. Unfortunately for the boys, it appears simple counseling sessions won't do the trick. It's time for the detective and the former Navy SEAL to trade the therapist's couch for a weekend couples retreat.

"There's an episode where they end up going to a couples retreat to sort of burn off some of their therapy time, because they've got to put in a certain amount of hours," executive producer Peter Lenkov told TV Line. "It's a really fun story."

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If McDanno's close quarters "Kuka'awale" stake out was amusing, you can bet a retreat will double the humor - and the carguments.

Outside of their own turbulent relationship, McGarrett (Alex O'Loughlin) and Danny (Scott Caan) will have personal problems of their own. Between secret children and upcoming proposals, it's sure to be a turbulent year in paradise.

Find out more when Hawaii Five-0 returns to CBS this Friday at 9 p.m. ET.