Second issue of series, even though the cover says issue #13. Weird Science continued its numbering from 'Saddle Romances' #11, starting its numbering with issue #12. Weird Science re-set to standard numbering as of the fifth issue (#5), but the first four issues are numbered #'s 12, 13, 14, & 15. This created the problem of the series having two issue numbers 12, 13, 14, & 15, which can only be distinguished by their publishing dates.
"The Flying Saucer Invasion"
"The Meteor Monster"
"The Micro-Race"
"...The Man Who Raced Time"