This game is a poor showing from the normally superb efforts of Artifex Mundi. The stand-out worst part of this game was the puzzles. The vast majority were hidden object scenes, with only a small handful of other puzzle types sprinkled throughout. Most scenes were visited two or three times apiece during the game, leading to extreme repetition and monotony. This is compounded if you choose to play on Expert mode, which I always do in these kinds of games, as you're forced to make a circuit of every room you've been to periodically to see which hidden object zone's gone active after you've advanced the plot.
The Hint button is often no help on Expert mode, as it'll usually point straight to the time machine -- I'm guessing since the Hint button works on shortest path possible, and the time machine is essentially a fast-travel device -- and on Expert mode there's no indication of which room or even which year you're supposed to be investigating. (I made it probably a third of the way through the game before I just started mashing the Hint button to find the next hotspot, and straight-up turned off Expert mode about halfway through).
At one point, I even experienced a glitch, or perhaps oversight, in one of the hidden object scenes. The first time through, I had to open up a box in order to get the object inside. On my third visit to the scene, one of the objects remained elusive, until finally I gave up and pushed the Hint button, finally revealing the object to have been completely obscured by the open lid of the box (which I had no way of closing).
The story is somwhat enjoyable, at least -- untangling the web of what happened with all the time travel rigmarole was one of the bright points of playing through the game. Even this was not without flaws, though, as the game ended abruptly on a cliffhanger, with no hint that the ending was that nigh.
I wouldn't be so overly critical of this game, but I normally play HOGs with my girlfriend, and while normally we have a good, fun time with them, this game provided nothing but frustration and seriously put the damper on an otherwise romantic evening.
I'm afraid I cannot recommend this game, unless your craving for hidden object games overrides all other senses, or you can get it on the cheap somewhere.