The first solution is wrong, but I am keeping it as a slight curiosity that the killer actually was escaping us till the third clue. The first 2 clues are fed to us so that we study them too deeply and hence find someone else as the killer. Ingenious!
Solution 1 :
Hint 1 is sufficient to point
Here are the corresponding Morse codes for everyone's name, and I will highlight in parenthesis parts which will be used in what follows :
Adelaide .- -.. . (.-..) .- .. -.. .
Beatrice -... . .- - (.-. .). -.-. .
Emmanuel . -- -- .- -. ..- . (.-..)
Kendrick -.- . -. -.. (.-. .). -.-. -.-
Quinn --(.- ..)- .. -. -.
Ryan .-. -.-- .- -.
Sebastian ... . -... (.- ..). - .. .- -.
Veronica ..(.- . .)-. --- -. .. -.-. .-
Everyone's name has the string .-.. which is the concatenated form of .-. . which reads re.
Thus Ryan is the only one without re in morse.
The second hint corroborates this fact:
The second hint corroborates this fact. Ryan chooses the people based on their names such that everyone has re in morse in their name. And about the contents of the bag, I can see Ryan plans to celebrate and escape, but I am twisting facts to support my conclusion, which I shouldn't be doing, so let me see what else is here.
Here's more (I think) :
The murderer wants us to add or as we have seen concatenate somethings to see what is going on. As others have found out, concatenating the morse codes of the objects found in the bags of the suspects (treating circular objects as a dot and the others as dashes) allows us to spell IDEOGRAM as an anagram of the formed letters. And again we are led to pictures and by the pictures of Ryan's objects, we can see he's definitely cheery and wants to go somewhere. Why? Because Ryan's guilty? Let's see what else we have.
Phew! The new hint really is a slap to the face and tells us that not everything has deep meanings...
Hint 3 combined with everything else says :
The argument goes as follows:
Hint 1 tells us
to use Morse
Hint 2 tells us
the morse codes of the objects in the bags must be added to find out the murderer. Also that it might be an anagram is hinted at by the IDEOGRAM anagram.
Hint 3 finally concludes:
The murderer has dropped a note, and the hint stresses on the letters the names start with. So, take the first letter of everyone's names. Then take the English equivalent of the morse code in the content of everyone's bag, and add them up. This gives us (ABEKQRSV)+(DAOGRMIE)=(ECTRIEBA) which is clearly an anagram of BEATRICE.