The clock is ticking toward an explosive showdown as the crew from Whit's End race to solve a heart-pounding mystery in this special, six-part adventure.

The ruthless four : After a lifetime of prospecting, Sam Cooper has struck gold. But he can't get it without partners, without trusting someone. The person he trusted to be his partner has betrayed him and now he must deal with a streak of bad luck as he fights off bandits, losing his horse and gun. In order to retrieve the gold, he must go back to the desert where it is hidden. Accompanied by his adopted son and some of his sinister friends, Cooper...