The most common and most likely answer to this crossword clue is the 10 letter word MOUSETRAPS
I've seen this crossword clue in Financial Times
M
O
U
S
E
T
R
A
P
S
Buddy explains!
The straight part
We know that "in which there just might be a catch" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case in which there just might be a catch = mousetraps.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does MOUSETRAPS mean?
MOUSETRAPS noun- A device for capturing or killing mice and other rodents.
- A website designed to open another copy of itself when the user tries to close the webpage. Frequently used by advertisers and pornographers.
- Ordinary, everyday cheese.
- A slice of bread or toast topped with cheese and then grilled or microwaved.
- An antisubmarine rocket used mainly during World War II by the US Navy and US Coast Guard.
- To trap; to trick or fool (someone) into a bad situation.
- To prevent (the user) from leaving a website by opening another copy when it is closed.