Letters in Mysterious Treasure

[old biker]

Three mysterious pictures which hide letters! You can choose one of them and have 300 seconds for each of them. There are 26 hidden letters from A to Z, but they are well hidden and it’s not very easy to find it. Use mouse to click on the letters when you find some. You can mistake 5 times, next is game over! It's not so easy as it looks. If you are ready start this adventure!

Good luck

play

Please use spoilers for hints and walkthroughs:
[spoiler=Title Here]Enter text here...[/spoiler]

Please do not post a video walkthrough for 7 days.

[graywolf]

I just couldn't find that 'Z' in image2. Good game. Time was fair.

[puzzler2]

I just couldn't find that 'Z' in image2. Good game. Time was fair.

it was beside the C