Oh, you just know you’re in for some negative Asian stereotyping in Detective 383 (Jan. 69) from the moment you see the cover.
The story, by Frank Robbins, with art by Bob Brown and Joe Giella, does indeed open in a Chinese restaurant, with Batman and Robin reading fortune cookies.
Batman and Robin each follow separate paths during the mystery. Robin investigates the source of the cookies, and finds a supposedly kidnapped girl, who turns out to be one of the villains.
Batman deals with the other side, finding the man in charge, and together they bust the pearl smuggling ring operating out of the restaurant.
And despite the cover, this is not nearly as bad as one would expect.
The Elongated Man story by Gardner Fox and Sid Greene that began last issue concludes here, which is the end of his run in Detective Comics.
Billy revives Ralph, and tells him of the bug he hid in the thieves car. The car itself gets stolen by a street gang, so it takes Ralph a while, but he tracks down the jewel thieves.
At the end of the story, Ralph and Sue present Billy with a Batman detective kit, the last wish he made on the coin.
The Elongated Man’s series comes back a couple years down the road for a few issues of The Flash, but will return to Detective in the 70s.