• The Cuckoo Clock / A Murder Mystery. (Ziff-Davis, 1946). (8vo), original gray cloth in dust jacket. First Edition. Dj chipped and worn.
• A Fiend in Need / A Fingerprint Mystery (Ziff-Davis, 1947). (8vo), original blue cloth in worn and chipped dust jacket. First Edition. 
• Case of the Deadly Kiss (Gold Medal paperback, 1957)  Original pictorial covers. Front cover creased.

Ozaki was the mixed-race son of a Japanese immigrant and his caucasian wife and was the first Nisei (as well as the first Asian) writer in the detective genre, producing 25 "cop-talk" whodunits by 1960.  The first two titles - his first books - were the only Ozaki mysteries published in hardcover.

The 1957 paperback was significant for introducing the character, Lt. Ken Koda (a “heavy-set, grey-haired, ruddy complexioned man”), probably the first literary Japanese-American Nisei police detective, although his ethnicity is never explicitly stated, only presumed from a common Japanese surname. While a Japanese-American detective appeared in a 1959 movie (based on a white director's script), the next Asian-American contributions to the literary detective genre did not appear for nearly three decades.