  We study knots in 3d Chern-Simons theory with complex gauge group
$SL(N,\mathbb{C})$, in the context of its relation with 3d $\mathcal{N}=2$
theory (the so-called 3d-3d correspondence). The defect has either co-dimension
2 or co-dimension 4 inside the 6d $(2,0)$ theory, which is compactified on a
3-manifold $\hat{M}$. We identify such defects in various corners of the 3d-3d
correspondence, namely in 3d $SL(N,\mathbb{C})$ Chern-Simons theory, in 3d
$\mathcal{N}=2$ theory, in 5d $\mathcal{N}=2$ super Yang-Mills theory, and in
the M-theory holographic dual. We can make quantitative checks of the 3d-3d
correspondence by computing partition functions at each of these theories. This
Letter is a companion to a longer paper, which contains more details and more
results.
