The Bat People (1974)

Synopsis
One of the least interesting efforts from American International Pictures, this dreary monster flick involves a scientist who is bitten by a rabid vampire bat while honeymooning in the desert, thereby transforming into a vampire-like creature (well, really more of a "were-bat") and setting out on nightly blood-drinking binges. He eventually puts the bite on his bride, and she undergoes a similar transformation. Apart from atmospheric photography, neat desert settings and some clever effects work from Stan Winston (mostly lost to sloppy editing), this dismal creature feature will probably lose viewers' interest long before the gory climax. Originally released as It Lives By Night. ~ Cavett Binion, All Movie Guide