Hlavný hrdina seriálu Shawn Spencer je človek s neobyčajnou pozorovacou schopnosťou, bystrým úsudkom a neuveriteľnou pamäťou. Tento jeho talent v ňom po celé detstvo podporoval a rozvíjal jeho otec Henry Spencer, ktorý od neho očakával, že si zvolí povolanie policajtov ako on. Tým sa však Shawn nestal, po škole vystriedal niekoľko desiatok zamestaní, ale u žiadneho z nich nevydržal dosť dlho. Všetko sa však zmení.

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