Riddles In the Dark - A box without hinges, key, or lid...

Riddles in the Dark - A box without hinges, key, or lid... (Found at Clinton-Washington Ave station; Church Ave bound G train)

Riddles in the Dark - A box without hinges, key, or lid... (Found at 23rd street station; uptown 1 train)

Riddles in the Dark - A box without hinges, key, or lid... (Found at 57th street station; Downtown N, R & Q trains)

Riddles in the Dark - A box without hinges, key, or lid... (Found at Bergen street station; Brooklyn bound 2 & 3 trains)

Riddles in the Dark - A box without hinges, key, or lid... (Found at 18th street station; uptown 1 train)

Riddles in the Dark - A box without hinges, key, or lid... (Found at Eastern Parkway/Brooklyn Museum station; Manhattan bound 2 & 3 trains)

Riddles in the Dark - A box without hinges, key, or lid... (Found at 23rd station; uptown 1 train)

Riddles in the Dark - A box without hinges, key, or lid...(Found at 50th station; downtown 1 train)

Riddles in the Dark - A box without hinges, key, or lid... (2015)

Answer: Eggs

Time doesn't seem to pass here.

Rivendell (33rd street station; downtown 6 train)

Rivendell (Broadway-Lafayette street station; uptown B, D, F & M trains)

Rivendell (14 street station; uptown F & M trains)

Rivendell (59th street/Columbus Circle station; downtown 1 train)

Rivendell (34th street/Herald Square station; uptown 1, 2 & 3 trains)

Rivendell (14th street station; downtown 1, 2 & 3 trains)

Rivendell (14th street station; uptown 1, 2 & 3 trains)

Rivendell (23rd street station; downtown 1 train)

Rivendell (23rd street station; downtown 1 train)

Rivendell (14th street station; downtown 1, 2 & 3 trains)

Rivendell (50th street station; uptown 1 train)

Rivendell (2015)

Riddles In the Dark - It cannot be seen, cannot be felt...

Riddles in the Dark - It cannot be seen, cannot be felt... (Found at Astor Place station; downtown 6 train)

Riddles in the Dark - It cannot be seen, cannot be felt... (Found at 23rd street station; uptown 1 train)

Riddles in the Dark - It cannot be seen, cannot be felt... (Found at 7th Ave station Brooklyn; Manhattan bound Q & B trains)

Riddles in the Dark - It cannot be seen, cannot be felt... (Found at 50th street station; downtown 1 train)

 Riddles in the Dark - It cannot be seen, cannot be felt... (Found at Chambers street station; uptown 1, 2 & 3 trains)

 Riddles in the Dark - It cannot be seen, cannot be felt... (Found at 50th street station; uptown 1 train)

 Riddles in the Dark - It cannot be seen, cannot be felt... (Found at 28th street station; downtown 1 train)

 Riddles in the Dark - It cannot be seen, cannot be felt... (Found at Astor Place station; uptown 6 train)

Riddles in the Dark - It cannot be seen, cannot be felt... (2015)

Answer: The dark.

But perhaps the delay will prove useful – it may have put them off our trail.

Ring Service Change (Clinton-Washington Ave station; south bound F & G trains)

 Ring Service Change (7th Ave station; south bound F & G trains)

Ring Service Change (Carroll street station; south bound F & G trains)

Ring Service Change (66th street/Lincoln Center station; Downtown 1 train)

Ring Service Change (5th Ave/59th street station; Downtown N, R & Q trains)

Ring Service Change (7th Ave station Brooklyn; Manhattan bound B & Q trains)

Ring Service Change (7th Ave station Brooklyn; Manhattan bound B & Q trains)

Ring Service Change (66th street/Lincoln Center station; uptown 1 train)

Ring Service Change (2015)