  Parton energy loss, quarkonium sequential melting and particle production
from electromagnetic interactions are tools to study Quark Gluon Plasma
properties. The STAR detector, with large acceptance at mid-rapidity, excellent
particle identification and wide transverse momentum coverage, is able to study
these probes in details. In Hard Probes 2015, the STAR collaboration reported
measurements of reconstructed jets, heavy-flavor physics, di-lepton production
and the performance of new detectors in seven presentations and one poster.
Given the rich results from STAR, this overview report will focus on a few
selected results on jets and $\Upsilon$ measurements in Au+Au collisions at
$\sqrt{s_{\rm NN}}=200\,$GeV, $J/\psi$ production in $p$+$p$ collisions at
$\sqrt{s_{\rm NN}}=500\,$GeV, and the di-electron spectrum in the low mass
region from the Beam Energy Scan - Phase I.
