So for a while now, people (including me) have be theorizing that Valentine is going to crash Alec and Lydia’s wedding. So WHAT IF:
Alec and everyone are waiting in the church. The doors open, and we see Lydia in her wedding gown walk slowly down the aisle. Suddenly, she stops. She pulls out her stele, and waves it over the shape-shifting rune on her right arm. A glamour peels away…
AND IT’S VALENTINE.
HE KILLED LYDIA AND HID HER IN SOME CLOSET SOMEWHERE AND SHAPE-SHIFTED INTO HER FORM SO HE (and his minions) COULD BREAK INTO THE CHURCH FILLED WITH (mostly) UNARMED SHADOWHUNTERS. A BATTLE ENSUES.
I mean, could you STAND the PARALLELS to her ORIGINAL ENTRANCE?!