Journey into Mystery / Thor Vol 1 #359

Plot

Thor, still under Lorelei's spell, makes his bid to put Loki in power and strikes Sif at his lover's command; Lorelei, still enamored of Loki, returns to her true love. Thanks to the wiles of the Enchantress, Thor catches his half-brother and his girl in bed and Lorelei's hold over him is broken. The Asgardians return home from Midgard.