KEEP THE CHANGE
This puzzle lost me at BONESAW (Surgeon's tool). Before that, I'd been chugging along, entering things like DISTURBIA (2007 Shia LaBeouf thriller or a 2008 "#1 hit by Rihanna), BARF ("Eww, gross!"), SQUALID (Like a pigsty), SAC (Ink container), OPIOIDS (Some pain relievers), and VEAL (____ parm) without thinking too much about it. But BONESAW? OOF.
I finished it off, eventually, and then stared long and hard at what I thought for a while were two shaded Ns. Finally, I realized that they were actually shaded boxes, and the circled letters were the only different letters in the entire 5x5 squares. All the other letters, and even the black squares, were just the same. Kind of cool, but also kind of weird that they are so arbitrarily cut from longer words all around them. They are nicely side-by-side and centered in the grid, but, well, ...
And what about that TELLRIGHTFROMLEFT entry? We're supposed to SPOTTHEDIFFERENCE between the left and the right squares, and then enter the circled letters into the unchecked slots at either side, but does it really matter which side is which? And why "Keep The Change?"
I don't like unchecked entries, no matter how carefully spelled out, unless there is an exceptionally clever or necessary reason to (self)isolate them. To me, it was all very unsatisfying. But tomorrow is another day, and another reviewer! Here's hoping the new week brings better things.