| PAPERCHASE | An investigation or process involving examination of many documents (5,5) |
| FIELDWORK | An investigation or search for material or data made in the real environment, as opposed to the classroom or laboratory (9) |
| ASCERTAIN | Establish after an investigation or study (9) |
| FAXES | Many document transmissions |
| ENDEARMENT | Process involving tender name |
| LIMITATION | The act or process of bringing or contesting a legal action in court (10) |
| PAPERTRAIL | What might be followed in an investigation |
| UNDERCOVER | Secret, as an investigation |
| INTERRUPTS | Breaks into a conversation or process (10) |
| SNIFF | Word onomatopoeic of an intake of air for scent or in scorn or sorrow; a nasal investigation; or, a mere hint (5) |
| FILTRATION | The action or process in which solid particles in a liquid are removed through a porous medium (10) |
| RESEARCH | Investigation or probe in pursuit of discovery or knowledge (8) |
| CRASHSITES | Focal points of many F.A.A. investigations ... or a description of 18-, 24- and 40-Across? |
| INLAY | Printed card or booklet attached to the case of a CD, DVD or cassette; or, the technique or process of boulle or marquetry (5) |
| STEEP | Expensive part of process involving European (5) |
| ETCH | Engrave metal or glass by using a process involving acid (4) |
| SCRUTINY | Close investigation or examination (8) |
| PROBONO | Free short investigation, or nearest offer |
| TILE | One of a series of items used in the art or process of tessellation; or, pieces for mah-jong or Scrabble (4) |
| REFORM | The act or process of improving or correcting an institution, practice, system etc; or, the betterment of a behaviour by giving up a vice (6) |
