I read this to the end, to see how the author would pull together the strings of the story. However, my goodness, does he spoil the tension completely by having pages and pages and pages of two small kids bickering! Every word is reported ... was he padding out his tale? I sometimes skipped over the endless child chat to get to the real story. This completely spoiled the "thrilling" part for me. To stop the thread of tension is almost unforgiveable in a book described as a thriller. I found the explanation in the end, and the description of the mine, too way out. I also cannot understand how the persons mentioned (no spoilers) managed to find their way back through the confusing tunnels. To me, not a succesful thriller.