| STRANGLER | Murderer is an unidentified man about 50 (9) |
| STRANGLET | The murderer is an unknown person, about fifty (9) |
| YELLED | Unknown, the Spanish man, about 50, having shouted (6) |
| ATHLETIC | Fit and active man, about 50, in top floor (8) |
| VIGILANTE | Big man about fifty tackled by rival who looks out for trouble? (9) |
| CHIEFTAIN | Head off if the first murderer is around (9) |
| SOMEWHERE | Home sewer burst in an unidentified location |
| INSOMNIAC | Is unable to sleep, as they indicated contrary murderer is to meet doctor to get snip, in short |
| FLOP | Elaborately-attired man, about fifty, is a failure (4) |
| SAYSOMETHING | Response to silence, for example, shows an unidentified object (3,9) |
| LLAMA | Holy man about fifty found in the Andes (5) |
| JOHNDOE | Unidentified man (2 words) |
| DOE | John ___ (unidentified man in a court case) |
| CANON | Conservative with unidentified man of the church (5) |
| ANON | By an unidentified author: Abbr. |
| PATHOGEN | Maybe something infectious, but in an unidentified part of book? |
| BOGEY | In Air Force slang, an unidentified or hostile aircraft |
| JANEDOE | US legal name given to an unidentified woman |
| UNKNOWN | Like an unidentified caller |
| FARMLAND | It's tilled a long way: man about fifty at end of road! (8) |
