Dr. Reubenstein and the alien voice

Doctor Reubenstein was shocked and dismayed when he answered the ringing telephone, only to hear a strange, metallic, alien voice say, "Yasec iovn eilacilla temeg! Nartsa raehoty lnoenoh pelet gnig, nirehtde rewsnaehn ehw. Deya! Msid! Dnadek cohssaw nietsne buerro, tcod?"