Disclaimer: This puzzle stands alone. No knowledge is needed of or from the linked puzzle below. The link is included only because it is the same character in a similar situation.
Daryl the convict was recently caught trying to send his wife a Valentine's Day card with a hidden message about his planned escape. The lead mail inspector discovered the message, shut down the plan, and returned the card to Daryl.
Although Daryl's latest mail, a birthday card to Daryl Jr., underwent heavy scrutiny by the same mail inspectors, it actually made it through the gauntlet and went out.
Did they miss something? Is Daryl Jr's birthday card hiding something?
On the front of the card was just "Happy 10th Birthday, Son".
And inside of the card:
I hope you have the best birthday ever. I wish I could be there. I made you a word search because I know you love doing those. Remember the strategy I taught you: left to right, top to bottom. Also, looking for an entire word is difficult, so focus on the first part of each word, and you'll find it!
Text version of word search above:
R O J S L I F T N B T W O C E F S U A E R D O H D E S S A Y E A I N S C K A I M E O O M D P E A U N L E C T N E E T I E O I Z R A E R A I H Z T B C N J S C N H T A E I H T S C E U H O H N D T I E O W T A O D E G E E D R R H I T N Y R E L A T L O C V N O S T L F S U T E G A M I H G R P Y
Just now realizing that EACH is contained in TEACH, I am adding in a restriction for the word search: A word cannot be fully contained in another word. Therefore, the EACH that is not in TEACH is the correct EACH.
Adding in from my responses in the comments: 9-11-2022
The grid is not a ruse. It is needed. The front of the card and 1st 3 sentences on the inside are just flavor text/fluff. Once you find the word property, it will lead to the answer. It is a simple and cool property which I do not remember ever having seen used, but I'm sure it has been used by someone, somewhere.